code: def output_shape(self):
      return {
          name: {
              "channels": self._out_feature_channels[name],
              "stride": self._out_feature_strides[name],
          }
          for name in self._out_features
      }
  
imports: import paddle
  import paddle.nn
  import paddle.nn.functional
  import numpy
  from paddleseg.cvlibs import manager
  from paddleseg.utils import utils
  from paddleseg.models.backbones.transformer_utils import *
label_desc: Use image node_id 3 for calling the SwinTransformer_base_patch4_window7_384_maskformer obj's underlying member method code with example usage: obj.output_shape() and returns: unknown