from pydantic._internal._utils import lenient_issubclass as lenient_issubclass
    from pydantic.fields import FieldInfo
    from pydantic.json_schema import GenerateJsonSchema as GenerateJsonSchema
    from pydantic.json_schema import JsonSchemaValue as JsonSchemaValue
    from pydantic_core import CoreSchema as CoreSchema
    from pydantic_core import PydanticUndefined, PydanticUndefinedType