def add_label(self, query_params=None):
list_json = self.fetch_json(<EOL>uri_path=self.base_uri + '<STR_LIT>',<EOL>http_method='<STR_LIT:POST>',<EOL>query_params=query_params or {}<EOL>)<EOL>return self.create_label(list_json)<EOL>
Create a label for a board. Returns a new Label object.