code: def workers(self):
      return self._workers
  
imports: import itertools
  import socket
  import numpy
  from ...None import opcodes
  from ...core.operand import OperandStage
  from ...serialization.serializables import FieldTypes, Int32Field, ListField, StringField
  from ...tensor.merge import TensorConcatenate
  from ...utils import get_next_port
  from ..operands import LearnOperand, LearnOperandMixin, OutputType
label_desc: Use image node_id 3 for calling the CollectPorts obj's underlying member method code with example usage: obj.workers() and returns: self