class_docstr: Stack class
class_docstr_tok: ["Stack","class"]
docstr: test if the stack is empty
  @return : True or False
  @rtype: boolean
docstr_tok: ["test","if","the","stack","is","empty","@","return",":","True","or","False","@","rtype",":","boolean"]
code: def is_empty(self):
      """
      test if the stack is empty
      @return : True or False
      @rtype: boolean
      """
      return self.items == []
  
label_desc: Use image node_id 4 for calling the Stack obj's underlying member method code with example usage: obj.is_empty() and returns: unknown