class_docstr: WIP.
class_docstr_tok: ["WIP","."]
docstr: WIP.
docstr_tok: ["WIP","."]
code: def __init__(
      self,
      var_name_map=None,
      dim_map=None,
      coord_map=None,
      model_name_map=None,
  ):
      """WIP."""
      self.var_name_map = {} if var_name_map is None else var_name_map
      self.dim_map = {} if dim_map is None else dim_map
      self.coord_map = {} if coord_map is None else coord_map
      self.model_name_map = (
          {} if model_name_map is None else model_name_map
      )
  
imports: from typing import Union
label_desc: Use image node_id 1 to create a new MapLabeller object from inherited base classes: BaseLabeller with example: obj = MapLabeller(var_name_map, dim_map, coord_map, model_name_map)