code: def insert_tag(
      self,
      name: str,
      tag_type: str,
  ) -> Tag:
      tag_name = name.strip()
      tag = Tag(
          name=tag_name,
          type=tag_type,
      )
      db.session.add(tag)
      db.session.commit()
      return tag
  
imports: import json
  from datetime import datetime
  from flask import g
  import pytest
  import prison
  from freezegun import freeze_time
  from sqlalchemy.sql import func
  from sqlalchemy import and_
  from superset.models.dashboard import Dashboard
  from superset.models.slice import Slice
  from superset.models.sql_lab import SavedQuery
  from superset.tags.models import user_favorite_tag_table
  from unittest.mock import patch
  import tests.integration_tests.test_app
  from superset import db, security_manager
  from superset.common.db_query_status import QueryStatus
  from superset.models.core import Database
  from superset.utils.database import get_example_database, get_main_database
  from superset.tags.models import ObjectType, Tag, TagType, TaggedObject
  from tests.integration_tests.fixtures.birth_names_dashboard import load_birth_names_dashboard_with_slices, load_birth_names_data
  from tests.integration_tests.fixtures.world_bank_dashboard import load_world_bank_dashboard_with_slices, load_world_bank_data
  from tests.integration_tests.fixtures.tags import with_tagging_system_feature
  from tests.integration_tests.base_tests import SupersetTestCase
  from superset.daos.tag import TagDAO
  from superset.tags.models import ObjectType
label_desc: Use image node_id 1 for calling the TestTagApi obj's underlying member method code with example usage: obj.insert_tag(name, tag_type) and returns: tag