code: def __init__(
      self,
      display_data=None,
      output_names=None,
      output_indexes=None,  # Alias?
      main_effects=None,
      hierarchical_values=None,
      clustering=None,
  ):
      self.fields = locals()
      del self.fields["self"]
  
imports: from typing import List
  from slicer import Alias
  from slicer import Obj
label_desc: Use image node_id 1 to create a new Extra object from inherited base classes: Component with example: obj = Extra(display_data, output_names, output_indexes, main_effects, hierarchical_values, clustering)