text: """Placeholders for supported annotations."""
  
  from typing import Type, Generic, TypeVar
  from mypy_extensions import TypedDict
  
  
  class JSONSchema(dict):
      """Placeholder for JSON schema TypedDict."""
  
  
  def JSONSchemaBase(schema_path: str) -> Type[dict]:
      """Generate a base class for JSON-schema powered TypedDicts."""
      return dict
  