code: def forward(self, x):
      feat = self.conva(x)
      for i in range(self.recurrence):
          feat = self.cca(feat)
      feat = self.convb(feat)
      output = self.out(paddle.concat([x, feat], axis=1))
      return output
  
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 RCCAModule obj's underlying member method code with example usage: obj.forward(x) and returns: output