Symbiote\GridFieldExtensions\Tests\Stub\PolymorphM2MParent:
  ParentOne:
  ParentTwo:

Symbiote\GridFieldExtensions\Tests\Stub\PolymorphM2MChild:
  ChildOne:
  ChildTwo:

Symbiote\GridFieldExtensions\Tests\Stub\PolymorphM2MMapper:
  MapP1ToC1:
    Parent: '=>Symbiote\GridFieldExtensions\Tests\Stub\PolymorphM2MParent.ParentOne'
    Child: '=>Symbiote\GridFieldExtensions\Tests\Stub\PolymorphM2MChild.ChildOne'
    Sort: 1

  MapP1ToC2:
    Parent: '=>Symbiote\GridFieldExtensions\Tests\Stub\PolymorphM2MParent.ParentOne'
    Child: '=>Symbiote\GridFieldExtensions\Tests\Stub\PolymorphM2MChild.ChildTwo'
    Sort: 2

  MapP2ToC1:
    Parent: '=>Symbiote\GridFieldExtensions\Tests\Stub\PolymorphM2MParent.ParentTwo'
    Child: '=>Symbiote\GridFieldExtensions\Tests\Stub\PolymorphM2MChild.ChildOne'
    Sort: 2

  MapP2ToC2:
    Parent: '=>Symbiote\GridFieldExtensions\Tests\Stub\PolymorphM2MParent.ParentTwo'
    Child: '=>Symbiote\GridFieldExtensions\Tests\Stub\PolymorphM2MChild.ChildTwo'
    Sort: 1