Build the estimator class.

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

def create_class(self, method):
        """
        Build the estimator class.

        Returns
        -------
        :return : string
            The built class as string.
        """
        self.__dict__.update(dict(method=method))
        temp_class = self.temp('separated.class')
        return temp_class.format(**self.__dict__)