class_docstr: A container accepting FileDescriptorProtos and maps DescriptorProtos.
code: def FindAllExtensionNumbers(self, extendee_name):
      # TODO(jieluo): implement this API.
      return []
  
file_path: catboost/contrib/python/protobuf/py3/google/protobuf/descriptor_database.py
imports: import warnings
label_desc: Use image node_id 6 for calling the DescriptorDatabase obj's underlying member method code with example usage: obj.FindAllExtensionNumbers(extendee_name) and returns: list