code: def out_shape(self):
      return [
          ShapeSpec(
              channels=self._out_channels[i],
              stride=self._out_strides[i],
          )
          for i in self.return_idx
      ]
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddle import ParamAttr
  from paddle.regularizer import L2Decay
  from paddle.nn.initializer import Constant
  from ppdet.modeling.ops import get_act_fn
  from ppdet.core.workspace import register, serializable
  from ..shape_spec import ShapeSpec
label_desc: Use image node_id 3 for calling the CSPResNet obj's underlying member method code with example usage: obj.out_shape() and returns: unknown