class_docstr: Dynamic wrapper for an instance to convert method output to gs.array.
code: def __str__(self):
      return str(self._instance)
  
file_path: geomstats/geomstats/numerics/_common.py
imports: import functools
  from types import MethodType
  import numpy
  from scipy.interpolate import PPoly
  import geomstats.backend
label_desc: Use image node_id 6 for calling the _InstanceConvertOutputWrapper obj's underlying member method code with example usage: obj.__str__() and returns: str