class_docstr: Generator for a fallback pyopengl backend.
class_docstr_tok: ["Generator","for","a","fallback","pyopengl","backend","."]
code: def _add_group_function(self, des, sig, es2func):
      # All group functions can be directly imported from OpenGL
      funcname = apiname(sig.split("(")[0])
      self._functions_to_import.append((funcname, funcname))
  
imports: from __future__ import annotations
  import os
  import sys
  import headerparser
  from annotations import parse_anotations
  from OpenGL import GL
label_desc: Use image node_id 3 for calling the PyOpenGL2ApiGenerator obj's underlying member method code with example usage: obj._add_group_function(des, sig, es2func) without return types