code: def build(self, *args, **kwargs):
      return RBFInterpolator(*args, **kwargs)
  
imports: import pickle
  import pytest
  import numpy
  from numpy.linalg import LinAlgError
  from numpy.testing import assert_allclose, assert_array_equal
  from scipy.stats.qmc import Halton
  from scipy.spatial import cKDTree
  from scipy.interpolate._rbfinterp import _AVAILABLE, _SCALE_INVARIANT, _NAME_TO_MIN_DEGREE, _monomial_powers, RBFInterpolator
  from scipy.interpolate import _rbfinterp_pythran
label_desc: Use image node_id 1 for calling the TestRBFInterpolatorNeighborsNone obj's underlying member method code with example usage: obj.build() and returns: RBFInterpolator