code: def _map_using_dict(
      el, el_name, source_dict
  ) -> alpha_operation.Operation:
      try:
          return source_dict[el]
      except KeyError as e:
          raise NeptuneException(
              f"We're not supporting {el} {el_name}."
          ) from e
  
imports: import abc
  from collections import namedtuple
  from neptune.attributes import constants
  from neptune.internal import operation
  from neptune.internal.backends.api_model import AttributeType
  from neptune.internal.operation import ImageValue
  from neptune.legacy.exceptions import NeptuneException
  from neptune.legacy.internal.channels.channels import ChannelType, ChannelValueType
label_desc: Use image node_id 1 for calling a global function with example usage: _map_using_dict(el, el_name, source_dict) and returns: source_dict