code: def _get_output_size(self):
      raise NotImplementedError
  
imports: import numpy
  from m2cgen import ast
  from m2cgen.assemblers import utils
  from m2cgen.assemblers.base import ModelAssembler
label_desc: Use image node_id 7 for calling the BaseSVMModelAssembler obj's underlying member method code with example usage: obj._get_output_size() without return types