code: def fit_eye_test_data(self):
      return self.generate_tests([{}])
  
imports: from geomstats.test.data import TestData
  from ._base import BaseEstimatorTestData, MeanEstimatorMixinsTestData
label_desc: Use image node_id 1 for calling the IncrementalFrechetMeanEuclideanTestData obj's underlying member method code with example usage: obj.fit_eye_test_data() and returns: self