# File lib/rspec/mocks/message_expectation.rb, line 259
      def generate_error
        if similar_messages.empty?
          @error_generator.raise_expectation_error(@sym, @expected_received_count, @actual_received_count, *@args_expectation.args)
        else
          @error_generator.raise_similar_message_args_error(self, *@similar_messages)
        end
      end