code: def forward(self, x):
      hx = x
      hxin = self.rebnconvin(hx)
  
      hx1 = self.rebnconv1(hxin)
      hx = self.pool1(hx1)
  
      hx2 = self.rebnconv2(hx)
      hx = self.pool2(hx2)
  
      hx3 = self.rebnconv3(hx)
      hx = self.pool3(hx3)
  
      hx4 = self.rebnconv4(hx)
      hx = self.pool4(hx4)
  
      hx5 = self.rebnconv5(hx)
      hx = self.pool5(hx5)
  
      hx6 = self.rebnconv6(hx)
  
      hx7 = self.rebnconv7(hx6)
  
      hx6d = self.rebnconv6d(paddle.concat((hx7, hx6), 1))
      hx6dup = _upsample_like(hx6d, hx5)
  
      hx5d = self.rebnconv5d(paddle.concat((hx6dup, hx5), 1))
      hx5dup = _upsample_like(hx5d, hx4)
  
      hx4d = self.rebnconv4d(paddle.concat((hx5dup, hx4), 1))
      hx4dup = _upsample_like(hx4d, hx3)
  
      hx3d = self.rebnconv3d(paddle.concat((hx4dup, hx3), 1))
      hx3dup = _upsample_like(hx3d, hx2)
  
      hx2d = self.rebnconv2d(paddle.concat((hx3dup, hx2), 1))
      hx2dup = _upsample_like(hx2d, hx1)
  
      hx1d = self.rebnconv1d(paddle.concat((hx2dup, hx1), 1))
  
      return hx1d + hxin
  
imports: import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddleseg.cvlibs import manager
  from paddleseg.models import layers
  from paddleseg.utils import utils
label_desc: Use image node_id 2 for calling the RSU7 obj's underlying member method code with example usage: obj.forward(x) and returns: unknown