code: def forward(self, x, shape=None):
      outs = []
      for conv_bn_func in self.conv_bn_func_list:
          if conv_bn_func is None:
              outs.append(x)
          else:
              out = conv_bn_func(x)
              if shape is not None:
                  out = F.interpolate(
                      out,
                      shape,
                      mode="bilinear",
                      align_corners=self.align_corners,
                  )
              outs.append(out)
      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
  from paddleseg.utils import utils
label_desc: Use image node_id 2 for calling the TransitionLayer obj's underlying member method code with example usage: obj.forward(x, shape) and returns: outs