code: def pop(self):
      if self.is_empty():
          raise IndexError("Stack is empty")
      value = self.head.value
      self.head = self.head.next
      self._top -= 1
      return value
  
imports: from abc import ABCMeta, abstractmethod
label_desc: Use image node_id 4 for calling the LinkedListStack obj's underlying member method code with example usage: obj.pop() and returns: value