code: def forward(self, x):
      if isinstance(x, (list, tuple)):
          x = paddle.concat(x, axis=1)
      output_dict = dict()
      output_dict["conv_blocks"] = self.conv_blocks.forward(x)
      output_dict["up1"] = self._up1.forward(output_dict["conv_blocks"])
      output_dict["up2"] = self._up2.forward(output_dict["up1"])
      output_dict["up3"] = self._up3.forward(output_dict["up2"])
      output_dict["pad2d"] = self._pad2d.forward(output_dict["up3"])
      output_dict["out_conv"] = self._out_conv.forward(
          output_dict["pad2d"]
      )
      return output_dict
  
file_path: PaddleOCR/StyleText/arch/decoder.py
imports: import paddle
  import paddle.nn
  from arch.base_module import SNConv, SNConvTranspose, ResBlock
label_desc: Use image node_id 2 for calling the Decoder obj's underlying member method code with example usage: obj.forward(x) and returns: output_dict