def corelinkformat(resource):
        """
        Return a formatted string representation of the corelinkformat in the tree.

        :return: the string
        """
        msg = "<" + resource.path + ">;"
        assert(isinstance(resource, Resource))
        keys = sorted(list(resource.attributes.keys()))
        for k in keys:
            method = getattr(resource, defines.corelinkformat[k], None)
            if method is not None and method != "":
                v = method
                msg = msg[:-1] + ";" + str(v) + ","
            else:
                v = resource.attributes[k]
                if v is not None:
                    msg = msg[:-1] + ";" + k + "=" + v + ","
        return msg
Return a formatted string representation of the corelinkformat in the tree.

        :return: the string