text: from plivo.base import PlivoResource, PlivoResourceInterface
  
  from ..utils.validators import *
  
  
  class QueuedCall(PlivoResource):
      _name = 'QueuedCall'
      _identifier_string = 'call_uuid'
  
  
  class QueuedCalls(PlivoResourceInterface):
      _resource_type = QueuedCall
      _iterable = False
  
      @validate_args(
          limit=[
              optional(
                  all_of(
                      of_type(*six.integer_types),
                      check(
                          lambda limit: 0 < limit <= 20,
                          message='0 < limit <= 20')))
          ],
          offset=[
              optional(
                  all_of(
                      of_type(*six.integer_types),
                      check(lambda offset: 0 <= offset, message='0 <= offset')))
          ])
      def list_ids(self, limit=20, offset=0):
          return self.client.request('GET', ('Call', ), {
              'status': 'queued',
              'limit': limit,
              'offset': offset,
          })
  
      @validate_args(_id=[of_type(six.text_type)])
      def get(self, _id):
          return self.client.request('GET', ('Call', _id), {'status': 'queued'})
  