code: def apply(self, xyz):
      return apply_affine(self.as_affine(), xyz)
  
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 4 for calling the Affine obj's underlying member method code with example usage: obj.apply(xyz) and returns: apply_affine