code: def forward(self, x):
      batch = x.shape[0]
  
      tile = batch // self.abs_pos_enc.shape[0]
      expb = paddle.tile(self.abs_pos_enc, repeat_times=(tile, 1, 1))
  
      return x + expb
  
imports: from typing import List, Tuple
  import numpy
  import paddle
  import paddle.nn
  from paddle import Tensor
  from medicalseg.cvlibs import manager
label_desc: Use image node_id 2 for calling the AbsPositionalEncoding1D obj's underlying member method code with example usage: obj.forward(x) and returns: unknown