code: def __init__(self, max_iter=500, tol=1e-8, imag_tol=1e-6):
      self.max_iter = max_iter
      self.tol = tol
      self.imag_tol = imag_tol
  
imports: import warnings
  import geomstats.backend
  import geomstats.errors
  from geomstats import algebra_utils
  from geomstats.geometry.base import LevelSet
  from geomstats.geometry.hermitian_matrices import powermh
  from geomstats.geometry.matrices import Matrices
  from geomstats.geometry.riemannian_metric import RiemannianMetric
  from geomstats.vectorization import repeat_out
label_desc: Use image node_id 1 to create a new _StiefelLogSolver object  with example: obj = _StiefelLogSolver(max_iter, tol, imag_tol)