code: def _get_output_size(self):
      output_size = 1
      n_classes = len(self.model.classes_)
      if n_classes > 2:
          output_size = n_classes
      return output_size
  
imports: import numpy
  from m2cgen import ast
  from m2cgen.assemblers import utils
  from m2cgen.assemblers.base import ModelAssembler
label_desc: Use image node_id 3 for calling the LightningSVMModelAssembler obj's underlying member method code with example usage: obj._get_output_size() and returns: output_size