code: def _get_param(self):
      param = self._vec12 / self._precond
      return param[self.param_inds]
  
imports: import numpy
  import scipy.linalg
  from nibabel.affines import apply_affine
  from transforms3d.quaternions import mat2quat, quat2axangle
  from .transform import Transform
label_desc: Use image node_id 5 for calling the Affine obj's underlying member method code with example usage: obj._get_param() and returns: param