class_docstr: A mini VGG backbone for text recognition, modified from `VGG-VeryDeep.
  
  <https://arxiv.org/pdf/1409.1556.pdf>`_
  
  Args:
      leaky_relu (bool): Use leakyRelu or not.
      input_channels (int): Number of channels of input image tensor.
code: def out_channels(self):
      return self.channels[-1]
  
imports: import torch.nn
  from mmengine.model import BaseModule, Sequential
  from mmocr.registry import MODELS
label_desc: Use image node_id 2 for calling the MiniVGG obj's underlying member method code with example usage: obj.out_channels() and returns: self