code: def _apply_generate_variable(self, v):
      if v.name in self._variable_callbacks:
          v = self._variable_callbacks[v.name](v)
      if self._fix_parameters:
          v.need_grad = False
      return v
  
imports: from __future__ import print_function
  import itertools
  from collections import OrderedDict
  import nnabla
  import numpy
label_desc: Use image node_id 19 for calling the NnpNetworkPass obj's underlying member method code with example usage: obj._apply_generate_variable(v) and returns: v