public class IsolationScheme<IMPLEMENTATION, PARAMS> {
    private final Class<IMPLEMENTATION> interfaceType;
    private final Class<PARAMS> paramsType;
    private final Class<? extends PARAMS> noParamsType;

    public IsolationScheme(Class<IMPLEMENTATION> interfaceType, Class<PARAMS> paramsType, Class<? extends PARAMS> noParamsType) {
        this.interfaceType = interfaceType;
        this.paramsType = paramsType;
        this.noParamsType = noParamsType;

    private final int identity = generateInt();
    private final Class<?> interfaceType;

    FreshInvocationHandler(Class<?> interfaceType) {
      this.interfaceType = interfaceType;
    }

    @Override
    @CheckForNull
    protected Object handleInvocation(Object proxy, Method method, @Nullable Object[] args) {
      return interfaceMethodCalled(interfaceType, method);
    }

    @Override
    public int hashCode() {

type TypeMap struct {
	inner map[reflect.Type]any
}

func NewTypeMap() TypeMap {
	return TypeMap{make(map[reflect.Type]any)}
}

func Set[T any](t TypeMap, v T) {
	interfaceType := reflect.TypeOf((*T)(nil)).Elem()
	t.inner[interfaceType] = v
}

func Get[T any](t TypeMap) *T {
	v, f := t.inner[reflect.TypeFor[T]()]
	if f {
		return ptr.Of(v.(T))
	}
	return nil

    private final int identity = generateInt();
    private final Class<?> interfaceType;

    FreshInvocationHandler(Class<?> interfaceType) {
      this.interfaceType = interfaceType;
    }

    @Override
    @CheckForNull
    protected Object handleInvocation(Object proxy, Method method, @Nullable Object[] args) {
      return interfaceMethodCalled(interfaceType, method);
    }

    @Override
    public int hashCode() {

// arrayType represents a fixed array type.
type arrayType = abi.ArrayType

// chanType represents a channel type.
type chanType = abi.ChanType

type funcType = abi.FuncType

type interfaceType = abi.InterfaceType

// ptrType represents a pointer type.
type ptrType = abi.PtrType

// sliceType represents a slice type.
type sliceType = abi.SliceType

// structType represents a struct type.

// It records the underlying concrete type (Type), the interface type it
// is implementing (Inter), and some ancillary information.
//
// allocated in non-garbage-collected memory
type ITab struct {
	Inter *InterfaceType
	Type  *Type
	Hash  uint32     // copy of Type.Hash. Used for type switches.
	Fun   [1]uintptr // variable sized. fun[0]==0 means Type does not implement Inter.
}

	if t.Kind() != Func {
		return nil
	}
	return (*FuncType)(unsafe.Pointer(t))
}

// InterfaceType returns t cast to a *InterfaceType, or nil if its tag does not match.
func (t *Type) InterfaceType() *InterfaceType {
	if t.Kind() != Interface {
		return nil
	}
	return (*InterfaceType)(unsafe.Pointer(t))
}

// Size returns the size of data with type t.

		}
		return res
	}
	res := md.textAddr(uint32(off))
	return unsafe.Pointer(res)
}

type uncommontype = abi.UncommonType

type interfacetype = abi.InterfaceType

type maptype = abi.MapType

type arraytype = abi.ArrayType

type chantype = abi.ChanType

type slicetype = abi.SliceType

type functype = abi.FuncType

		*(*[]byte)(x) = val
	}
	return
}

func assertE2I(inter *interfacetype, t *_type) *itab {
	if t == nil {
		// explicit conversions require non-nil interface value.
		panic(&TypeAssertionError{nil, nil, &inter.Type, ""})
	}
	return getitab(inter, t, false)
}

func assertE2I2(inter *interfacetype, t *_type) *itab {
	if t == nil {
		return nil
	}
	return getitab(inter, t, true)
}

				m = n.ElemList[0]
				continue
			}
			return n.Pos()
		// types
		// case *ArrayType:
		// case *SliceType:
		// case *DotsType:
		// case *StructType:
		// case *Field:
		// case *InterfaceType:
		// case *FuncType:
		// case *MapType:
		// case *ChanType:

		// statements
		// case *EmptyStmt:
		// case *LabeledStmt:
		// case *BlockStmt:
		// case *ExprStmt:
		case *SendStmt: