code: def forward(self, x):
      out_left = paddle.nn.functional.relu(x - self.alpha)
      out_right = paddle.nn.functional.relu(-self.alpha - x)
      x = x - out_left + out_right
      return x
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import sys
  import yaml
  import paddle
  import paddle.distributed
  from ppocr.data import build_dataloader, set_signal_handlers
  from ppocr.modeling.architectures import build_model
  from ppocr.losses import build_loss
  from ppocr.optimizer import build_optimizer
  from ppocr.postprocess import build_post_process
  from ppocr.metrics import build_metric
  from ppocr.utils.save_load import load_model
  import tools.program
  import paddleslim
  from paddleslim.dygraph.quant import QAT
  import numpy
label_desc: Use image node_id 2 for calling the PACT obj's underlying member method code with example usage: obj.forward(x) and returns: x