class_docstr: WIP.
class_docstr_tok: ["WIP","."]
docstr: WIP.
docstr_tok: ["WIP","."]
code: def make_pp_label(self, var_name, pp_var_name, sel, isel):
      """WIP."""
      names = self.var_pp_to_str(var_name, pp_var_name)
      return self.make_label_vert(names, sel, isel)
  
imports: from typing import Union
label_desc: Use image node_id 8 for calling the BaseLabeller obj's underlying member method code with example usage: obj.make_pp_label(var_name, pp_var_name, sel, isel) and returns: self