code: def forward(self, x, skipx):
      out = self.dropout1(x) if self.if_dropout else x
      skipx = self.dropout2(skipx) if self.if_dropout2 else skipx
      out = self.relu1(self.bn1(self.up_conv(out)))
      xcat = paddle.concat((out, skipx), 1)
      out = self.ops(xcat)
      out = self.relu2(paddle.add(out, xcat))
  
      return out
  
imports: import os
  import sys
  import paddle
  import paddle.nn
  import paddle.nn.functional
  from medicalseg.cvlibs import manager
  from medicalseg.utils import utils
label_desc: Use image node_id 2 for calling the UpTransition obj's underlying member method code with example usage: obj.forward(x, skipx) and returns: out