class IProtocol:
    def build_SIGNIN(self, login, password):
        pass

    def build_SIGNUP(self, login, password):
        pass

    def build_FILELIST(self):
        pass

    def build_SAVEFILE(self, filename, size):
        pass

    def build_GETFILE(self, filename):
        pass

    def build_REMOVEFILE(self, filename):
        pass

    def build_SIGNOUT(self):
        pass

    def parse(self, line, debug_enabled):
        pass

    def parse_FILES(self, line):
        pass

    def parse_GETFILEOK(self, line):
        pass