code: def _default_initialization(self, space, point, base_point):
      return point - base_point
  
imports: import math
  from abc import ABC, abstractmethod
  import geomstats.backend
  from geomstats.numerics.bvp import ScipySolveBVP
  from geomstats.numerics.ivp import GSIVPIntegrator
  from geomstats.numerics.optimizers import ScipyMinimize
  from geomstats.vectorization import get_batch_shape
label_desc: Use image node_id 2 for calling the _LogShootingSolverUnflatten obj's underlying member method code with example usage: obj._default_initialization(space, point, base_point) and returns: unknown