return new InstanceOfPredicate<>(clazz);
  }

  /**
   * Returns a predicate that evaluates to {@code true} if the class being tested is assignable to
   * (is a subtype of) {@code clazz}. Example:
   *
   * {@snippet :
   * List<Class<?>> classes = Arrays.asList(
   *     Object.class, String.class, Number.class, Long.class);

@GwtCompatible
@NullMarked
public abstract class MapInterfaceTest<K extends @Nullable Object, V extends @Nullable Object>
    extends TestCase {

  /** A key type that is not assignable to any classes but Object. */
  private static final class IncompatibleKeyType {
    @Override
    public String toString() {
      return "IncompatibleKeyType";
    }
  }

  protected final boolean supportsPut;

  }

  public void testisSupertypeOf_resolved() {
    assertFalse(Assignability.of().isAssignable());
    assertTrue(new Assignability<Integer, Integer>() {}.isAssignable());
    assertTrue(new Assignability<Integer, Object>() {}.isAssignable());
    assertFalse(new Assignability<Integer, String>() {}.isAssignable());
    TypeTokenTest.<Number, Integer>assignabilityTestWithTypeVariables();
  }

   */
  public static <V extends @Nullable Object> ListenableFuture<V> immediateFuture(
      @ParametricNullness V value) {
    if (value == null) {
      // This cast is safe because null is assignable to V for all V (i.e. it is bivariant)
      @SuppressWarnings("unchecked")
      ListenableFuture<V> typedNull = (ListenableFuture<V>) ImmediateFuture.NULL;
      return typedNull;
    }

pkg go/types, method (Checker) TypeOf(ast.Expr) Type
pkg go/types, method (Error) Error() string
pkg go/types, method (TypeAndValue) Addressable() bool
pkg go/types, method (TypeAndValue) Assignable() bool
pkg go/types, method (TypeAndValue) HasOk() bool
pkg go/types, method (TypeAndValue) IsBuiltin() bool
pkg go/types, method (TypeAndValue) IsNil() bool
pkg go/types, method (TypeAndValue) IsType() bool

		} else {
			reflectV := reflect.ValueOf(v)
			// Optimal value type acquisition for v
			reflectValType := reflectV.Type()

			if reflectValType.AssignableTo(field.FieldType) {
				if reflectV.Kind() == reflect.Ptr && reflectV.Elem().Kind() == reflect.Ptr {
					reflectV = reflect.Indirect(reflectV)
				}
				field.ReflectValueOf(ctx, value).Set(reflectV)
				return

				reflect.Copy(fieldValue, oldFieldValue)
			}

			appendToFieldValues := func(ev reflect.Value) {
				if ev.Type().AssignableTo(elemType) {
					fieldValue = reflect.Append(fieldValue, ev)
				} else if ev.Type().Elem().AssignableTo(elemType) {
					fieldValue = reflect.Append(fieldValue, ev.Elem())
				} else {

pkg reflect, type StructField struct, Tag StructTag
pkg reflect, type StructField struct, Type Type
pkg reflect, type StructTag string
pkg reflect, type Type interface, Align() int
pkg reflect, type Type interface, AssignableTo(Type) bool
pkg reflect, type Type interface, Bits() int
pkg reflect, type Type interface, ChanDir() ChanDir
pkg reflect, type Type interface, Elem() Type
pkg reflect, type Type interface, Field(int) StructField