code: def forward(self, x):
      c2, c3, c4, c5 = x
  
      in5 = self.ins_conv[3](c5)
      in4 = self.ins_conv[2](c4)
      in3 = self.ins_conv[1](c3)
      in2 = self.ins_conv[0](c2)
  
      out4 = in4 + F.upsample(
          in5, scale_factor=2, mode="nearest", align_mode=1
      )  # 1/16
      out3 = in3 + F.upsample(
          out4, scale_factor=2, mode="nearest", align_mode=1
      )  # 1/8
      out2 = in2 + F.upsample(
          out3, scale_factor=2, mode="nearest", align_mode=1
      )  # 1/4
  
      p5 = self.inp_conv[3](in5)
      p4 = self.inp_conv[2](out4)
      p3 = self.inp_conv[1](out3)
      p2 = self.inp_conv[0](out2)
  
      if self.intracl is True:
          p5 = self.incl4(p5)
          p4 = self.incl3(p4)
          p3 = self.incl2(p3)
          p2 = self.incl1(p2)
  
      p5 = F.upsample(p5, scale_factor=8, mode="nearest", align_mode=1)
      p4 = F.upsample(p4, scale_factor=4, mode="nearest", align_mode=1)
      p3 = F.upsample(p3, scale_factor=2, mode="nearest", align_mode=1)
  
      fuse = paddle.concat([p5, p4, p3, p2], axis=1)
      return fuse
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import paddle
  from paddle import nn
  import paddle.nn.functional
  from paddle import ParamAttr
  import os
  import sys
  from ppocr.modeling.necks.intracl import IntraCLBlock
  from ppocr.modeling.backbones.det_mobilenet_v3 import SEModule
label_desc: Use image node_id 2 for calling the RSEFPN obj's underlying member method code with example usage: obj.forward(x) and returns: fuse