code: def forward(self, x):
      hx = x
      xout = self.relu_s1(self.bn_s1(self.conv_s1(hx)))
  
      return xout
  
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 REBNCONV obj's underlying member method code with example usage: obj.forward(x) and returns: xout