code: def get_data_item_for_hardware_source(self, hardware_source, channel_id: str=None, processor_id: str=None, create_if_needed: bool=False, large_format: bool=False) -> DataItem:
          
          ...
docs: Get the data item associated with hardware source and (optional) channel id and processor_id. Optionally create if missing.
  
          :param hardware_source: The hardware_source.
          :param channel_id: The (optional) channel id.
          :param processor_id: The (optional) processor id for the channel.
          :param create_if_needed: Whether to create a new data item if none is found.
          :return: The associated data item. May be None.
  
          .. versionadded:: 1.0
  
          Status: Provisional
          Scriptable: Yes