def add_model_string(self, model_str, position=<NUM_LIT:1>, file_id=None):
if file_id is None:<EOL><INDENT>file_id = self.make_unique_id('<STR_LIT>')<EOL><DEDENT>ret_data = self.file_create(File.from_string(model_str, position,<EOL>file_id))<EOL>return ret_data<EOL>
Add a kappa model given in a string to the project.