class_docstr: WIP.
class_docstr_tok: ["WIP","."]
docstr: WIP.
docstr_tok: ["WIP","."]
code: def var_pp_to_str(self, var_name, pp_var_name):
      """WIP."""
      var_name_str = self.var_name_to_str(var_name)
      pp_var_name_str = self.var_name_to_str(pp_var_name)
      if var_name_str == pp_var_name_str:
          return f"{var_name_str}"
      return f"{var_name_str} / {pp_var_name_str}"
  
imports: from typing import Union
label_desc: Use image node_id 4 for calling the BaseLabeller obj's underlying member method code with example usage: obj.var_pp_to_str(var_name, pp_var_name) and returns: var_name_str, str, pp_var_name_str, var_name_str