code: def _get_single_coef(self, idx=0):
      return self.model.dual_coef_[idx]
  
imports: import numpy
  from m2cgen import ast
  from m2cgen.assemblers import utils
  from m2cgen.assemblers.base import ModelAssembler
label_desc: Use image node_id 4 for calling the SklearnSVMModelAssembler obj's underlying member method code with example usage: obj._get_single_coef(idx) and returns: self