code: def demo(self, x):
      feat1 = self.b0(x)
      feat2 = self.b1(x)
      feat3 = self.b2(x)
      feat4 = self.b3(x)
      x = self.b4.demo(x)
      import mxnet.ndarray as F
  
      x = F.concat(x, feat1, feat2, feat3, feat4, dim=1)
      return self.project(x)
  
imports: from mxnet.gluon import nn
  from mxnet.context import cpu
  from mxnet.gluon.nn import HybridBlock
  from .wideresnet import wider_resnet38_a2
label_desc: Use image node_id 3 for calling the _ASPP obj's underlying member method code with example usage: obj.demo(x) and returns: self