code: def repr_attribute(self, attrs, name):
      if name == "class_":
          value = getattr(attrs, name)
          if value is None:
              return
      return super(HtmlVisitor, self).repr_attribute(attrs, name)
  
imports: import sys, re
label_desc: Use image node_id 1 for calling the HtmlVisitor obj's underlying member method code with example usage: obj.repr_attribute(attrs, name) and returns: super