code: def insert_default_saved_query(
      self,
      label: str = "saved1",
      schema: str = "schema1",
      username: str = "admin",
  ) -> SavedQuery:
      admin = self.get_user(username)
      example_db = get_example_database()
      return self.insert_saved_query(
          label,
          "SELECT col1, col2 from table1",
          db_id=example_db.id,
          created_by=admin,
          schema=schema,
          description="cool description",
      )
  
imports: import json
  from datetime import datetime
  from io import BytesIO
  from typing import Optional
  from zipfile import is_zipfile, ZipFile
  import yaml
  import pytest
  import prison
  from freezegun import freeze_time
  from sqlalchemy.sql import func, and_
  import tests.integration_tests.test_app
  from superset import db
  from superset.models.core import Database
  from superset.models.core import FavStar
  from superset.models.sql_lab import SavedQuery
  from superset.utils.database import get_example_database
  from tests.integration_tests.base_tests import SupersetTestCase
  from tests.integration_tests.fixtures.importexport import database_config, saved_queries_config, saved_queries_metadata_config
label_desc: Use image node_id 2 for calling the TestSavedQueryApi obj's underlying member method code with example usage: obj.insert_default_saved_query(label, schema, username) and returns: self