class_docstr: Procrustes metric on the pre-shape space.
class_docstr_tok: ["Procrustes","metric","on","the","pre-shape","space","."]
code: def _flatten_point(self, point):
      sphere_embedding_dim = self._space._sphere.embedding_space.dim
      return gs.reshape(
          point, point.shape[:-2] + (sphere_embedding_dim,)
      )
  
imports: import geomstats.backend
  from geomstats.geometry.base import LevelSet
  from geomstats.geometry.fiber_bundle import FiberBundle
  from geomstats.geometry.hypersphere import Hypersphere
  from geomstats.geometry.matrices import Matrices
  from geomstats.geometry.quotient_metric import QuotientMetric
  from geomstats.geometry.riemannian_metric import RiemannianMetric
  from geomstats.integrator import integrate
  from geomstats.vectorization import get_batch_shape, repeat_out
label_desc: Use image node_id 1 for calling the PreShapeMetric obj's underlying member method code with example usage: obj._flatten_point(point) and returns: gs