code: def forward(self, x):
      for i, l in enumerate(self.encoder):
          x = l(x)
      return x
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import paddle
  from paddle import nn
  from ppocr.modeling.heads.rec_ctc_head import get_para_bias_attr
  from ppocr.modeling.backbones.rec_svtrnet import Block, ConvBNLayer, trunc_normal_, zeros_, ones_
label_desc: Use image node_id 2 for calling the EncoderWithCascadeRNN obj's underlying member method code with example usage: obj.forward(x) and returns: x