diff --git a/lib/ast/README.md b/lib/ast/README.md
index d74c0a96..b8c5230c 100644
--- a/lib/ast/README.md
+++ b/lib/ast/README.md
@@ -14,7 +14,7 @@ When compiling we deal with two times, compile-time and run-time. All the headac
 Similarly, the result of compiling is two-fold: a static and a dynamic part.
 
 - the static part are objects like the constants, but also defined classes and their methods
-- the dynamic part is the code, which is stored as streams of instructions in the MethodDefinition
+- the dynamic part is the code, which is stored as streams of instructions in the CompiledMethod
 
 Too make things a little simpler, we create a very high level instruction stream at first and then run 
 transformation and optimisation passes on the stream to improve it. 
@@ -23,8 +23,8 @@ Each ast class gets a compile method that does the compilation.
   
 #### Method Definition and Instructions
 
-The first argument to the compile method is the MethodDefinition. All code is encoded as a stream of Instructions in the
-MethodDefinition. In fact Instructions are a linked list and so the MethodDefinition only hold the head, and the current
+The first argument to the compile method is the CompiledMethod. All code is encoded as a stream of Instructions in the
+CompiledMethod. In fact Instructions are a linked list and so the CompiledMethod only hold the head, and the current
 insertion point.
 
 Code is added to the method (using add()), rather than working with the actual instructions. This is so each compile method
diff --git a/lib/ast/function_expression.rb b/lib/ast/function_expression.rb
index 78666771..3307f29c 100644
--- a/lib/ast/function_expression.rb
+++ b/lib/ast/function_expression.rb
@@ -7,7 +7,7 @@ module Ast
         p.name
       end
       r = receiver ? receiver.compile(method,message) : Virtual::Self.new()
-      new_method = Virtual::MethodDefinition.new(name , args , r )
+      new_method = Virtual::CompiledMethod.new(name , args , r )
       new_method.class_name = r.is_a?(BootClass) ? r.name : method.class_name
       clazz = Virtual::BootSpace.space.get_or_create_class(new_method.class_name)
       clazz.add_instance_method new_method
diff --git a/lib/kernel/integer.rb b/lib/kernel/integer.rb
index 25d12f30..bcd3a3e3 100644
--- a/lib/kernel/integer.rb
+++ b/lib/kernel/integer.rb
@@ -7,7 +7,7 @@ module Salama
     # As we write before we recurse (save a push) we write the number backwards
     # arguments: string address , integer
     def self.utoa context
-      utoa_function = Virtual::MethodDefinition.new(:utoa ,  [ Virtual::Integer ] , Virtual::Integer ,Virtual::Integer )
+      utoa_function = Virtual::CompiledMethod.new(:utoa ,  [ Virtual::Integer ] , Virtual::Integer ,Virtual::Integer )
       return utoa_function
       str_addr = utoa_function.receiver
       number = utoa_function.args.first
@@ -25,7 +25,7 @@ module Salama
     end
 
     def self.putint context
-      putint_function = Virtual::MethodDefinition.new(:putint , [] , Virtual::Integer ,Virtual::Integer )
+      putint_function = Virtual::CompiledMethod.new(:putint , [] , Virtual::Integer ,Virtual::Integer )
       return putint_function
       buffer = Virtual::StringConstant.new("           ") # create a buffer
       context.object_space.add_object buffer              # and save it (function local variable: a no no)
@@ -52,7 +52,7 @@ module Salama
     # a hand coded version of the fibonachi numbers
     # not my hand off course, found in the net http://www.peter-cockerell.net/aalp/html/ch-5.html
     def self.fibo context
-      fibo_function = Virtual::MethodDefinition.new(:fibo ,  [] , Virtual::Integer ,Virtual::Integer )
+      fibo_function = Virtual::CompiledMethod.new(:fibo ,  [] , Virtual::Integer ,Virtual::Integer )
       return fibo_function
       result = fibo_function.return_type
       int = fibo_function.receiver
diff --git a/lib/kernel/object.rb b/lib/kernel/object.rb
index d558633a..423a30ba 100644
--- a/lib/kernel/object.rb
+++ b/lib/kernel/object.rb
@@ -6,7 +6,7 @@ module Salama
       # set/get instance variable use it. 
       # This is just a placeholder, as we code this in ruby, but the instance methods need the definition before.
       def index_of context , name = Virtual::Integer
-        index_function = Virtual::MethodDefinition.new(:index_of , Virtual::Reference , [Virtual::Reference] , Virtual::Integer )
+        index_function = Virtual::CompiledMethod.new(:index_of , Virtual::Reference , [Virtual::Reference] , Virtual::Integer )
         return index_function
       end
 
@@ -23,7 +23,7 @@ module Salama
       #  end  
       # The at_index is just "below" the api, something we need but don't want to expose, so we can't code the above in ruby
       def _get_instance_variable context , name = Virtual::Integer
-        get_function = Virtual::MethodDefinition.new(:_get_instance_variable , [ Virtual::Reference ] , Virtual::Reference ,Virtual::Mystery )
+        get_function = Virtual::CompiledMethod.new(:_get_instance_variable , [ Virtual::Reference ] , Virtual::Reference ,Virtual::Mystery )
         return get_function
         me = get_function.receiver
         var_name = get_function.args.first
@@ -44,7 +44,7 @@ module Salama
       end
 
       def _set_instance_variable(context , name = Virtual::Integer , value = Virtual::Integer )
-        set_function = Virtual::MethodDefinition.new(:_set_instance_variable ,[Virtual::Reference ,Virtual::Reference], Virtual::Reference ,Virtual::Mystery )
+        set_function = Virtual::CompiledMethod.new(:_set_instance_variable ,[Virtual::Reference ,Virtual::Reference], Virtual::Reference ,Virtual::Mystery )
         return set_function
         receiver set_function
         me = set_function.receiver
diff --git a/lib/kernel/string.rb b/lib/kernel/string.rb
index bacfd729..e93a2f74 100644
--- a/lib/kernel/string.rb
+++ b/lib/kernel/string.rb
@@ -1,7 +1,7 @@
 module Salama
   module Kernel
     def self.putstring context 
-      function = Virtual::MethodDefinition.new(:putstring , [] )
+      function = Virtual::CompiledMethod.new(:putstring , [] )
       return function
       ret = Virtual::RegisterMachine.instance.write_stdout(function)
       function.set_return ret
@@ -11,15 +11,15 @@ module Salama
   class String
     module ClassMethods
       def get context , index = Virtual::Integer
-        get_function = Virtual::MethodDefinition.new(:get , [ Virtual::Integer] , Virtual::Integer , Virtual::Integer )
+        get_function = Virtual::CompiledMethod.new(:get , [ Virtual::Integer] , Virtual::Integer , Virtual::Integer )
         return get_function
       end
       def set context , index = Virtual::Integer , char = Virtual::Integer
-        set_function = Virtual::MethodDefinition.new(:set , [Virtual::Integer, Virtual::Integer] , Virtual::Integer ,Virtual::Integer )
+        set_function = Virtual::CompiledMethod.new(:set , [Virtual::Integer, Virtual::Integer] , Virtual::Integer ,Virtual::Integer )
         return set_function
       end
       def puts context 
-        puts_function = Virtual::MethodDefinition.new(:puts , []  )
+        puts_function = Virtual::CompiledMethod.new(:puts , []  )
         return puts_function
       end
     end
diff --git a/lib/kernel/system.rb b/lib/kernel/system.rb
index 3fa8d8bf..a70c9681 100644
--- a/lib/kernel/system.rb
+++ b/lib/kernel/system.rb
@@ -1,7 +1,7 @@
 module Salama
   module Kernel
     def self.exit context
-      function = Virtual::MethodDefinition.new(:exit , [] , Virtual::Integer)
+      function = Virtual::CompiledMethod.new(:exit , [] , Virtual::Integer)
       return function
       ret = Virtual::RegisterMachine.instance.exit(function)
       function.set_return ret
diff --git a/lib/parfait/boot_class.rb b/lib/parfait/boot_class.rb
index 24cd3813..ce0fb841 100644
--- a/lib/parfait/boot_class.rb
+++ b/lib/parfait/boot_class.rb
@@ -13,7 +13,7 @@ require "virtual/meta_class"
     end
     attr_reader :name , :instance_methods , :meta_class , :context , :super_class_name
     def add_instance_method method
-      raise "not a method #{method.class} #{method.inspect}" unless method.is_a? Virtual::MethodDefinition
+      raise "not a method #{method.class} #{method.inspect}" unless method.is_a? Virtual::CompiledMethod
       raise "syserr " unless method.name.is_a? Symbol
       @instance_methods << method
     end
diff --git a/lib/register/assembler.rb b/lib/register/assembler.rb
index 965e53fc..051f8ad3 100644
--- a/lib/register/assembler.rb
+++ b/lib/register/assembler.rb
@@ -52,7 +52,7 @@ module Register
       end
     end
 
-    def assemble_MethodDefinition(method)
+    def assemble_CompiledMethod(method)
       assemble_object(method.name)
       method.blocks.each do |block|
         assemble_object(block)
diff --git a/lib/register/call_implementation.rb b/lib/register/call_implementation.rb
index 0b60a482..bc002bc1 100644
--- a/lib/register/call_implementation.rb
+++ b/lib/register/call_implementation.rb
@@ -1,7 +1,7 @@
 module Register
   # This implements call logic, which is simply like a c call (not send, that involves lookup and all sorts)
   #
-  # The only target for a call is a MethodDefinition, so we just need to get the address for the code
+  # The only target for a call is a CompiledMethod, so we just need to get the address for the code
   # and call it.
   #
   # The only slight snag is that we would need to assemble before getting the address, but to assemble
diff --git a/lib/register/linker.rb b/lib/register/linker.rb
index bf19a453..4af38b1d 100644
--- a/lib/register/linker.rb
+++ b/lib/register/linker.rb
@@ -53,7 +53,7 @@ module Register
       length + link_Array(clazz.instance_methods , at + length)
     end
 
-    def link_MethodDefinition(method , at)
+    def link_CompiledMethod(method , at)
       length = members(2)
       length += link_object(method.name ,at + length)
       # NOT an ARRAY, just a bag of bytes
diff --git a/lib/sof/volotile.rb b/lib/sof/volotile.rb
index cf18a8f1..45a0cef3 100644
--- a/lib/sof/volotile.rb
+++ b/lib/sof/volotile.rb
@@ -2,7 +2,7 @@ module Sof
   class Volotile
     @@mapping = {
       Virtual::Block =>  [:method],
-      Virtual::MethodDefinition =>  [:current]
+      Virtual::CompiledMethod =>  [:current]
     }
     def self.attributes clazz
       @@mapping[clazz] || []
diff --git a/lib/virtual/boot_space.rb b/lib/virtual/boot_space.rb
index 32ad4d25..092aa4fd 100644
--- a/lib/virtual/boot_space.rb
+++ b/lib/virtual/boot_space.rb
@@ -18,7 +18,7 @@ module Virtual
     def initialize machine = nil
       super()
       @classes = {}
-      @main = Virtual::MethodDefinition.new("main" , [] )
+      @main = Virtual::CompiledMethod.new("main" , [] )
       #global objects (data)
       @objects = []
       boot_classes! # boot is a verb here
@@ -63,7 +63,7 @@ module Virtual
     end
     # boot the classes, ie create a minimal set of classes with a minimal set of functions
     # minimal means only that which can not be coded in ruby
-    # MethodDefinitions are grabbed from respective modules by sending the method name. This should return the 
+    # CompiledMethods are grabbed from respective modules by sending the method name. This should return the 
     # implementation of the method (ie a method object), not actually try to implement it (as that's impossible in ruby)
     def boot_classes!
       # very fiddly chicken 'n egg problem. Functions need to be in the right order, and in fact we have to define some 
diff --git a/lib/virtual/method_definition.rb b/lib/virtual/compiled_method.rb
similarity index 98%
rename from lib/virtual/method_definition.rb
rename to lib/virtual/compiled_method.rb
index 948d8196..3f2d7967 100644
--- a/lib/virtual/method_definition.rb
+++ b/lib/virtual/compiled_method.rb
@@ -29,10 +29,10 @@ module Virtual
   #            These (eg if/while) blocks may themselves have linear blocks ,but the last of these 
   #            MUST have an uncoditional branch. And remember, all roads lead to return.
   
-  class MethodDefinition < Virtual::Object
+  class CompiledMethod < Virtual::Object
     #return the main function (the top level) into which code is compiled
-    def MethodDefinition.main
-      MethodDefinition.new(:main , [] )
+    def CompiledMethod.main
+      CompiledMethod.new(:main , [] )
     end
     def initialize name , args , receiver = Virtual::Self.new , return_type = Virtual::Mystery
       @name = name.to_sym
diff --git a/lib/virtual/machine.rb b/lib/virtual/machine.rb
index 5273dfe7..cd9bb730 100644
--- a/lib/virtual/machine.rb
+++ b/lib/virtual/machine.rb
@@ -57,7 +57,7 @@ module Virtual
     def compile_main bytes
       syntax  = @parser.parse_with_debug(bytes)
       parts = Parser::Transform.new.apply(syntax)
-      main = Virtual::MethodDefinition.main
+      main = Virtual::CompiledMethod.main
       expressions = parts.compile( main , self.message )
     end
 
@@ -76,7 +76,7 @@ end
 
 #require_relative "list"
 require_relative "instruction"
-require_relative "method_definition"
+require_relative "compiled_method"
 require_relative "frame"
 require_relative "message"
 require_relative "value"
diff --git a/test/virtual/test_methods.rb b/test/virtual/test_methods.rb
index f0ecb9e2..34724792 100644
--- a/test/virtual/test_methods.rb
+++ b/test/virtual/test_methods.rb
@@ -9,7 +9,7 @@ def foo(x)
   5
 end
 HERE
-    @output = "---RETURN_MARKER- &1 !ruby/object:Virtual::MethodDefinitionRETURN_MARKER  name: :fooRETURN_MARKER  args:RETURN_MARKER  - :xRETURN_MARKER  locals: []RETURN_MARKER  tmps: []RETURN_MARKER  receiver: !ruby/object:Virtual::SelfRETURN_MARKER    index: 1RETURN_MARKER    type: !ruby/class 'Virtual::Mystery'RETURN_MARKER  return_type: &2 !ruby/object:Virtual::ReturnRETURN_MARKER    index: 0RETURN_MARKER    type: !ruby/class 'Virtual::Integer'RETURN_MARKER  blocks:RETURN_MARKER  - &3 !ruby/object:Virtual::BlockRETURN_MARKER    method: *1RETURN_MARKER    name: :fooRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER    - !ruby/object:Virtual::SetRETURN_MARKER      to: *2RETURN_MARKER      from: !ruby/object:Virtual::IntegerConstantRETURN_MARKER        integer: 5RETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *1RETURN_MARKER    name: :foo_returnRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER  current: *3RETURN_MARKER"
+    @output = "---RETURN_MARKER- &1 !ruby/object:Virtual::CompiledMethodRETURN_MARKER  name: :fooRETURN_MARKER  args:RETURN_MARKER  - :xRETURN_MARKER  locals: []RETURN_MARKER  tmps: []RETURN_MARKER  receiver: !ruby/object:Virtual::SelfRETURN_MARKER    index: 1RETURN_MARKER    type: !ruby/class 'Virtual::Mystery'RETURN_MARKER  return_type: &2 !ruby/object:Virtual::ReturnRETURN_MARKER    index: 0RETURN_MARKER    type: !ruby/class 'Virtual::Integer'RETURN_MARKER  blocks:RETURN_MARKER  - &3 !ruby/object:Virtual::BlockRETURN_MARKER    method: *1RETURN_MARKER    name: :fooRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER    - !ruby/object:Virtual::SetRETURN_MARKER      to: *2RETURN_MARKER      from: !ruby/object:Virtual::IntegerConstantRETURN_MARKER        integer: 5RETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *1RETURN_MARKER    name: :foo_returnRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER  current: *3RETURN_MARKER"
     check
   end
 
@@ -20,7 +20,7 @@ def foo()
 end
 foo()
 HERE
-    @output = "---RETURN_MARKER- &2 !ruby/object:Virtual::MethodDefinitionRETURN_MARKER  name: :fooRETURN_MARKER  args: []RETURN_MARKER  locals: []RETURN_MARKER  tmps: []RETURN_MARKER  receiver: !ruby/object:Virtual::SelfRETURN_MARKER    index: 1RETURN_MARKER    type: &1 !ruby/class 'Virtual::Mystery'RETURN_MARKER  return_type: !ruby/object:Virtual::ReturnRETURN_MARKER    index: 0RETURN_MARKER    type: *1RETURN_MARKER  blocks:RETURN_MARKER  - &5 !ruby/object:Virtual::BlockRETURN_MARKER    method: *2RETURN_MARKER    name: :fooRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER    - !ruby/object:Virtual::SetRETURN_MARKER      to: !ruby/object:Virtual::NewSelfRETURN_MARKER        index: 1RETURN_MARKER        type: *1RETURN_MARKER      from: &3 !ruby/object:Virtual::SelfRETURN_MARKER        index: 1RETURN_MARKER        type: *1RETURN_MARKER    - !ruby/object:Virtual::SetRETURN_MARKER      to: !ruby/object:Virtual::NewNameRETURN_MARKER        index: 3RETURN_MARKER        type: *1RETURN_MARKER      from: :putsRETURN_MARKER    - !ruby/object:Virtual::SetRETURN_MARKER      to: !ruby/object:Virtual::NewMessageSlotRETURN_MARKER        index: 4RETURN_MARKER        type: !ruby/class 'Virtual::Reference'RETURN_MARKER      from: &4 !ruby/object:Virtual::StringConstantRETURN_MARKER        string: HelloRETURN_MARKER    - !ruby/object:Virtual::MessageSendRETURN_MARKER      name: :putsRETURN_MARKER      me: *3RETURN_MARKER      args:RETURN_MARKER      - *4RETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *2RETURN_MARKER    name: :foo_returnRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER  current: *5RETURN_MARKER- !ruby/object:Virtual::ReturnRETURN_MARKER  index: 0RETURN_MARKER  type: *1RETURN_MARKER"
+    @output = "---RETURN_MARKER- &2 !ruby/object:Virtual::CompiledMethodRETURN_MARKER  name: :fooRETURN_MARKER  args: []RETURN_MARKER  locals: []RETURN_MARKER  tmps: []RETURN_MARKER  receiver: !ruby/object:Virtual::SelfRETURN_MARKER    index: 1RETURN_MARKER    type: &1 !ruby/class 'Virtual::Mystery'RETURN_MARKER  return_type: !ruby/object:Virtual::ReturnRETURN_MARKER    index: 0RETURN_MARKER    type: *1RETURN_MARKER  blocks:RETURN_MARKER  - &5 !ruby/object:Virtual::BlockRETURN_MARKER    method: *2RETURN_MARKER    name: :fooRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER    - !ruby/object:Virtual::SetRETURN_MARKER      to: !ruby/object:Virtual::NewSelfRETURN_MARKER        index: 1RETURN_MARKER        type: *1RETURN_MARKER      from: &3 !ruby/object:Virtual::SelfRETURN_MARKER        index: 1RETURN_MARKER        type: *1RETURN_MARKER    - !ruby/object:Virtual::SetRETURN_MARKER      to: !ruby/object:Virtual::NewNameRETURN_MARKER        index: 3RETURN_MARKER        type: *1RETURN_MARKER      from: :putsRETURN_MARKER    - !ruby/object:Virtual::SetRETURN_MARKER      to: !ruby/object:Virtual::NewMessageSlotRETURN_MARKER        index: 4RETURN_MARKER        type: !ruby/class 'Virtual::Reference'RETURN_MARKER      from: &4 !ruby/object:Virtual::StringConstantRETURN_MARKER        string: HelloRETURN_MARKER    - !ruby/object:Virtual::MessageSendRETURN_MARKER      name: :putsRETURN_MARKER      me: *3RETURN_MARKER      args:RETURN_MARKER      - *4RETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *2RETURN_MARKER    name: :foo_returnRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER  current: *5RETURN_MARKER- !ruby/object:Virtual::ReturnRETURN_MARKER  index: 0RETURN_MARKER  type: *1RETURN_MARKER"
     check
   end
 
@@ -30,7 +30,7 @@ def String.length(x)
   @length
 end
 HERE
-    @output = "---RETURN_MARKER- &7 !ruby/object:Virtual::MethodDefinitionRETURN_MARKER  name: :lengthRETURN_MARKER  args:RETURN_MARKER  - :xRETURN_MARKER  locals: []RETURN_MARKER  tmps: []RETURN_MARKER  receiver: &6 !ruby/object:Boot::BootClassRETURN_MARKER    instance_methods:RETURN_MARKER    - &2 !ruby/object:Virtual::MethodDefinitionRETURN_MARKER      name: :getRETURN_MARKER      args:RETURN_MARKER      - &1 !ruby/class 'Virtual::Integer'RETURN_MARKER      locals: []RETURN_MARKER      tmps: []RETURN_MARKER      receiver: *1RETURN_MARKER      return_type: *1RETURN_MARKER      blocks:RETURN_MARKER      - &3 !ruby/object:Virtual::BlockRETURN_MARKER        method: *2RETURN_MARKER        name: :getRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER      - !ruby/object:Virtual::BlockRETURN_MARKER        method: *2RETURN_MARKER        name: :get_returnRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER      current: *3RETURN_MARKER    - &4 !ruby/object:Virtual::MethodDefinitionRETURN_MARKER      name: :setRETURN_MARKER      args:RETURN_MARKER      - *1RETURN_MARKER      - *1RETURN_MARKER      locals: []RETURN_MARKER      tmps: []RETURN_MARKER      receiver: *1RETURN_MARKER      return_type: *1RETURN_MARKER      blocks:RETURN_MARKER      - &5 !ruby/object:Virtual::BlockRETURN_MARKER        method: *4RETURN_MARKER        name: :setRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER      - !ruby/object:Virtual::BlockRETURN_MARKER        method: *4RETURN_MARKER        name: :set_returnRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER      current: *5RETURN_MARKER    name: :StringRETURN_MARKER    super_class_name: :ObjectRETURN_MARKER    meta_class: !ruby/object:Boot::MetaClassRETURN_MARKER      functions: []RETURN_MARKER      me_self: *6RETURN_MARKER  return_type: !ruby/object:Virtual::ReturnRETURN_MARKER    index: 0RETURN_MARKER    type: !ruby/class 'Virtual::Mystery'RETURN_MARKER  blocks:RETURN_MARKER  - &8 !ruby/object:Virtual::BlockRETURN_MARKER    method: *7RETURN_MARKER    name: :lengthRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER    - !ruby/object:Virtual::InstanceGetRETURN_MARKER      name: :lengthRETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *7RETURN_MARKER    name: :length_returnRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER  current: *8RETURN_MARKER"
+    @output = "---RETURN_MARKER- &7 !ruby/object:Virtual::CompiledMethodRETURN_MARKER  name: :lengthRETURN_MARKER  args:RETURN_MARKER  - :xRETURN_MARKER  locals: []RETURN_MARKER  tmps: []RETURN_MARKER  receiver: &6 !ruby/object:Boot::BootClassRETURN_MARKER    instance_methods:RETURN_MARKER    - &2 !ruby/object:Virtual::CompiledMethodRETURN_MARKER      name: :getRETURN_MARKER      args:RETURN_MARKER      - &1 !ruby/class 'Virtual::Integer'RETURN_MARKER      locals: []RETURN_MARKER      tmps: []RETURN_MARKER      receiver: *1RETURN_MARKER      return_type: *1RETURN_MARKER      blocks:RETURN_MARKER      - &3 !ruby/object:Virtual::BlockRETURN_MARKER        method: *2RETURN_MARKER        name: :getRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER      - !ruby/object:Virtual::BlockRETURN_MARKER        method: *2RETURN_MARKER        name: :get_returnRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER      current: *3RETURN_MARKER    - &4 !ruby/object:Virtual::CompiledMethodRETURN_MARKER      name: :setRETURN_MARKER      args:RETURN_MARKER      - *1RETURN_MARKER      - *1RETURN_MARKER      locals: []RETURN_MARKER      tmps: []RETURN_MARKER      receiver: *1RETURN_MARKER      return_type: *1RETURN_MARKER      blocks:RETURN_MARKER      - &5 !ruby/object:Virtual::BlockRETURN_MARKER        method: *4RETURN_MARKER        name: :setRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER      - !ruby/object:Virtual::BlockRETURN_MARKER        method: *4RETURN_MARKER        name: :set_returnRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER      current: *5RETURN_MARKER    name: :StringRETURN_MARKER    super_class_name: :ObjectRETURN_MARKER    meta_class: !ruby/object:Boot::MetaClassRETURN_MARKER      functions: []RETURN_MARKER      me_self: *6RETURN_MARKER  return_type: !ruby/object:Virtual::ReturnRETURN_MARKER    index: 0RETURN_MARKER    type: !ruby/class 'Virtual::Mystery'RETURN_MARKER  blocks:RETURN_MARKER  - &8 !ruby/object:Virtual::BlockRETURN_MARKER    method: *7RETURN_MARKER    name: :lengthRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER    - !ruby/object:Virtual::InstanceGetRETURN_MARKER      name: :lengthRETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *7RETURN_MARKER    name: :length_returnRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER  current: *8RETURN_MARKER"
     check
   end
 
@@ -65,7 +65,7 @@ def ofthen(n)
   end
 end
 HERE
-      @output = "---RETURN_MARKER- &2 !ruby/object:Virtual::MethodDefinitionRETURN_MARKER  name: :ofthenRETURN_MARKER  args:RETURN_MARKER  - !ruby/object:Virtual::ArgumentRETURN_MARKER    name: :nRETURN_MARKER    type: !ruby/object:Virtual::Mystery {}RETURN_MARKER  locals:RETURN_MARKER  - !ruby/object:Virtual::LocalRETURN_MARKER    name: :isitRETURN_MARKER    type: &3 !ruby/object:Virtual::IntegerConstantRETURN_MARKER      integer: 42RETURN_MARKER  - &1 !ruby/object:Virtual::LocalRETURN_MARKER    name: :maybenotRETURN_MARKER    type: &4 !ruby/object:Virtual::IntegerConstantRETURN_MARKER      integer: 667RETURN_MARKER  tmps: []RETURN_MARKER  receiver: !ruby/object:Virtual::SelfReferenceRETURN_MARKER    clazz: RETURN_MARKER  return_type: *1RETURN_MARKER  blocks:RETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *2RETURN_MARKER    name: :ofthenRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER    - !ruby/object:Virtual::ImplicitBranchRETURN_MARKER      to: &5 !ruby/object:Virtual::BlockRETURN_MARKER        method: *2RETURN_MARKER        name: :ofthen_if_trueRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::FrameSetRETURN_MARKER          name: :isitRETURN_MARKER          value: *3RETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *2RETURN_MARKER    name: :ofthen_if_falseRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::FrameSetRETURN_MARKER      name: :maybenotRETURN_MARKER      value: *4RETURN_MARKER    - !ruby/object:Virtual::UnconditionalBranchRETURN_MARKER      to: &6 !ruby/object:Virtual::BlockRETURN_MARKER        method: *2RETURN_MARKER        name: :ofthen_if_mergeRETURN_MARKER        branch: RETURN_MARKER        codes: []RETURN_MARKER  - *5RETURN_MARKER  - *6RETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *2RETURN_MARKER    name: :ofthen_returnRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER  current: *6RETURN_MARKER"
+      @output = "---RETURN_MARKER- &2 !ruby/object:Virtual::CompiledMethodRETURN_MARKER  name: :ofthenRETURN_MARKER  args:RETURN_MARKER  - !ruby/object:Virtual::ArgumentRETURN_MARKER    name: :nRETURN_MARKER    type: !ruby/object:Virtual::Mystery {}RETURN_MARKER  locals:RETURN_MARKER  - !ruby/object:Virtual::LocalRETURN_MARKER    name: :isitRETURN_MARKER    type: &3 !ruby/object:Virtual::IntegerConstantRETURN_MARKER      integer: 42RETURN_MARKER  - &1 !ruby/object:Virtual::LocalRETURN_MARKER    name: :maybenotRETURN_MARKER    type: &4 !ruby/object:Virtual::IntegerConstantRETURN_MARKER      integer: 667RETURN_MARKER  tmps: []RETURN_MARKER  receiver: !ruby/object:Virtual::SelfReferenceRETURN_MARKER    clazz: RETURN_MARKER  return_type: *1RETURN_MARKER  blocks:RETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *2RETURN_MARKER    name: :ofthenRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER    - !ruby/object:Virtual::ImplicitBranchRETURN_MARKER      to: &5 !ruby/object:Virtual::BlockRETURN_MARKER        method: *2RETURN_MARKER        name: :ofthen_if_trueRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::FrameSetRETURN_MARKER          name: :isitRETURN_MARKER          value: *3RETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *2RETURN_MARKER    name: :ofthen_if_falseRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::FrameSetRETURN_MARKER      name: :maybenotRETURN_MARKER      value: *4RETURN_MARKER    - !ruby/object:Virtual::UnconditionalBranchRETURN_MARKER      to: &6 !ruby/object:Virtual::BlockRETURN_MARKER        method: *2RETURN_MARKER        name: :ofthen_if_mergeRETURN_MARKER        branch: RETURN_MARKER        codes: []RETURN_MARKER  - *5RETURN_MARKER  - *6RETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *2RETURN_MARKER    name: :ofthen_returnRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER  current: *6RETURN_MARKER"
       check
   end