code: def pad(self, x, kernel_size, stride):
      left = (kernel_size - stride + 1) // 2
      right = (kernel_size - stride) // 2
      pad = (left, right, left, right)
      return F.pad(x, pad, mode="reflect")
  
file_path: PaddleSeg/Matting/ppmatting/models/layers/gca_module.py
imports: import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddleseg.cvlibs import param_init
label_desc: Use image node_id 6 for calling the GuidedCxtAtten obj's underlying member method code with example usage: obj.pad(x, kernel_size, stride) and returns: F