code: def add_option(self, name, default, opt_type, meta_args, meta_kwargs):
      if name in self.values:
          raise Exception(
              "Config option {} already defined".format(name)
          )
      self.values[name] = default
      self.meta[name] = (opt_type, meta_args, meta_kwargs)
  
imports: import os
  import sys
label_desc: Use image node_id 4 for calling the Config obj's underlying member method code with example usage: obj.add_option(name, default, opt_type, meta_args, meta_kwargs) without return types