code: def test_svr_params():
      rsvr = SVR()
      assert rsvr.metric == "riemann"
  
      rsvr.set_params(**{"metric": "logeuclid"})
      assert rsvr.metric == "logeuclid"
  
      rsvr.set_params(**{"max_iter": 501})
      assert rsvr.max_iter == 501
  
imports: import pickle
  import numpy
  from numpy.testing import assert_array_equal
  import pytest
  from conftest import get_distances, get_means, get_metrics
  from pyriemann.regression import SVR, KNearestNeighborRegressor
  from pyriemann.utils.kernel import kernel
  from pyriemann.utils.mean import mean_covariance
label_desc: Use image node_id 7 for calling a global function with example usage: test_svr_params() without return types