ImmediateExecutionContext* ctx,
                       std::unique_ptr<TFSignatureDefFunction>* out);

  // This method creates a "Call" Op used to execute the function.
  Status MakeCallOp(absl::Span<AbstractTensorHandle* const> inputs,
                    ImmediateOpPtr* out) const override;

  const SignatureDefFunctionMetadata& GetFunctionMetadata() const override;