code: def _define_embedding_space(self):
      return Euclidean(dim=self.dim + 1)
  
imports: import geomstats.backend
  from geomstats.geometry.base import ImmersedSet
  from geomstats.geometry.euclidean import Euclidean
  from geomstats.geometry.invariant_metric import BiInvariantMetric
  from geomstats.geometry.pullback_metric import PullbackDiffeoMetric
  from geomstats.test_cases.geometry.diffeo import CircleSO2Diffeo
  from geomstats.test_cases.geometry.riemannian_metric import RiemannianMetricTestCase
label_desc: Use image node_id 3 for calling the SphereIntrinsic obj's underlying member method code with example usage: obj._define_embedding_space() and returns: Euclidean