Convert the string pointing to a component using dot notation to
        a component reference.
        :param s: string pointing to component using dot notation
        :return: ComponentRef

def from_string(cls, s: str) -> 'ComponentRef':
        """
        Convert the string pointing to a component using dot notation to
        a component reference.
        :param s: string pointing to component using dot notation
        :return: ComponentRef
        """

        components = s.split('.')
        return cls.from_tuple(components)