class_docstr: Validate that object_type is indeed an object type.
code: def to_python(self, value: str) -> Any:
      return ObjectType[value]
  
file_path: superset/superset/utils/url_map_converters.py
imports: from typing import Any
  from werkzeug.routing import BaseConverter, Map
  from superset.tags.models import ObjectType
label_desc: Use image node_id 1 for calling the ObjectTypeConverter obj's underlying member method code with example usage: obj.to_python(value) and returns: ObjectType