class_docstr: WIP.
class_docstr_tok: ["WIP","."]
docstr: WIP.
docstr_tok: ["WIP","."]
code: def dim_coord_to_str(self, dim, coord_val, coord_idx):
      """WIP."""
      return f"{coord_idx}"
  
imports: from typing import Union
label_desc: Use image node_id 1 for calling the IdxLabeller obj's underlying member method code with example usage: obj.dim_coord_to_str(dim, coord_val, coord_idx) and returns: coord_idx