code: def create_png(cls_name, meth_name, graph, dir_name='graphs2'):
      
      m_name = ''.join(x for x in meth_name if x.isalnum())
      name = ''.join((cls_name.split('/')[-1][:-1], '#', m_name))
      graph.draw(name, dir_name)
docs: Creates a PNG from a given :class:`~androguard.decompiler.dad.graph.Graph`.
  
      :param str cls_name: name of the class
      :param str meth_name: name of the method
      :param androguard.decompiler.dad.graph.Graph graph:
      :param str dir_name: output directory