code: function getParentInstance(inst) {
  	  !('_hostNode' in inst) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'getParentInstance: Invalid argument.') : _prodInvariant('36') : void 0;
  
  	  return inst._hostParent;
  	}
docs: Return the parent instance of the passed-in instance.