code: def _check_sample_belongs_to_support(self, sample, atol):
      self.assertTrue(gs.all(sample >= 0.0))
  
imports: import geomstats.backend
  from geomstats.test_cases.geometry.base import VectorSpaceOpenSetTestCase
  from geomstats.test_cases.information_geometry.base import InformationManifoldMixinTestCase
label_desc: Use image node_id 1 for calling the ExponentialDistributionsTestCase obj's underlying member method code with example usage: obj._check_sample_belongs_to_support(sample, atol) without return types