using SomeType from "SomeFile.h";
using class SomeClass from "SomeFile.h";
using struct SomeStruct from "SomeFile.h";

[RefCounted] using SomeRefcountedType from "SomeFile.h";
[RefCounted] using class SomeRefcountedClass from "SomeFile.h";
[RefCounted] using struct SomeRefcountedStruct from "SomeFile.h";

[MoveOnly] using SomeMoveonlyType from "SomeFile.h";
[MoveOnly] using class SomeMoveonlyClass from "SomeFile.h";
[MoveOnly] using struct SomeMoveonlyStruct from "SomeFile.h";

[RefCounted, MoveOnly] using SomeRefcountedMoveonlyType from "SomeFile.h";
[RefCounted, MoveOnly] using class SomeRefcountedMoveonlyClass from "SomeFile.h";
[RefCounted, MoveOnly] using struct SomeRefcountedMoveonlyStruct from "SomeFile.h";

[MoveOnly=data] using SomeMoveonlyDataType from "SomeFile.h";
[MoveOnly=data] using class SomeMoveonlyDataClass from "SomeFile.h";
[MoveOnly=data] using struct SomeMoveonlyDataStruct from "SomeFile.h";

[MoveOnly=send] using SomeMoveonlySendType from "SomeFile.h";
[MoveOnly=send] using class SomeMoveonlySendClass from "SomeFile.h";
[MoveOnly=send] using struct SomeMoveonlySendStruct from "SomeFile.h";

union SomeUnion
{
  SomeType;
  SomeClass;
  SomeStruct;
  SomeRefcountedType;
  SomeRefcountedClass;
  SomeRefcountedStruct;
  SomeMoveonlyType;
  SomeMoveonlyClass;
  SomeMoveonlyStruct;
  SomeRefcountedMoveonlyType;
  SomeRefcountedMoveonlyClass;
  SomeRefcountedMoveonlyStruct;
  SomeMoveonlyDataType;
  SomeMoveonlyDataClass;
  SomeMoveonlyDataStruct;
  SomeMoveonlySendType;
  SomeMoveonlySendClass;
  SomeMoveonlySendStruct;
};

[ChildProc=any]
protocol PbasicUsing {
child:
    async Msg(SomeUnion foo);
};