code: def forward(self, x):
      outs = []
      residual_func_idx = 0
      for i in range(self._actual_ch):
          residual = x[i]
          residual_shape = paddle.shape(residual)[-2:]
          for j in range(len(self._in_channels)):
              if j > i:
                  y = self.residual_func_list[residual_func_idx](x[j])
                  residual_func_idx += 1
  
                  y = F.interpolate(
                      y,
                      residual_shape,
                      mode="bilinear",
                      align_corners=self.align_corners,
                  )
                  residual = residual + y
              elif j < i:
                  y = x[j]
                  for k in range(i - j):
                      y = self.residual_func_list[residual_func_idx](y)
                      residual_func_idx += 1
  
                  residual = residual + y
  
          residual = F.relu(residual)
          outs.append(residual)
  
      return outs
  
imports: import math
  import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddleseg.cvlibs import manager, param_init
  from paddleseg.models import layers
  import ppmatting
label_desc: Use image node_id 2 for calling the FuseLayers obj's underlying member method code with example usage: obj.forward(x) and returns: outs