def save(self, file_path):
<EOL>data = self.location.ep_style_location_string + '<STR_LIT>'<EOL>for d_day in self.design_days:<EOL><INDENT>data = data + d_day.ep_style_string + '<STR_LIT>'<EOL><DEDENT>write_to_file(file_path, data, True)<EOL>
Save ddy object as a .ddy file.

        args:
            file_path: A string representing the path to write the ddy file to.