code: def __init__(self, name, es2func, wglfunc, annfunc):
      self.name = name
      self.apiname = apiname(name)
      self.es2 = es2func
      self.wgl = wglfunc
      self.ann = annfunc
      self.args = []
  
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 1 to create a new FunctionDescription object  with example: obj = FunctionDescription(name, es2func, wglfunc, annfunc)