Build the estimator method or function.

        Returns
        -------
        :return : string
            The built method as string.

def create_method(self):
        """
        Build the estimator method or function.

        Returns
        -------
        :return : string
            The built method as string.
        """
        n_indents = 1 if self.target_language in ['java', 'js',
                                                  'php', 'ruby'] else 0
        return self.temp('separated.method', n_indents=n_indents,
                         skipping=True).format(**self.__dict__)