def __find_at_keypath(self, keypath):
    keys = keypath.split('.')
    rv = self.json
    for key in keys:
        rv = rv[key]
    return rv
def __find_at_keypath(self, keypath):
    keys = keypath.split('.')
    rv = self.json
    for key in keys:
        rv = rv[key]
    return rv