code: def list_pop(self, list_, i):
      if i is None:
          x = list_.pop()
      else:
          x = list_.pop(i)
      return list_, x
  
imports: from nvidia.dali._autograph.converters import directives
  from nvidia.dali._autograph.converters import lists
  from nvidia.dali._autograph.core import converter_testing
  from nvidia.dali._autograph.utils import hooks
label_desc: Use image node_id 7 for calling the OperatorList obj's underlying member method code with example usage: obj.list_pop(list_, i) and returns: list_,  x