How to use the odoorpc.rpc.error function in OdooRPC

def rpc_method(*args):
            try:
                self._sock = xmlrpclib_custom.TimeoutServerProxy(
                    self._url, allow_none=True,
                    timeout=self._connector.timeout)
                sock_method = getattr(self._sock, method, False)
                return sock_method(*args)
            #NOTE: exception raised with these kind of requests:
            #   - execute('fake.model', 'search', [])
            #   - execute('sale.order', 'fake_method')
            except xmlrpclib.Fault as exc:
                # faultCode: error message
                # faultString: Server traceback (following the server version
                # used, a bad request can produce a server traceback, or not).
                raise error.ConnectorError(exc.faultCode, exc.faultString)
            #TODO NEED TEST (when is raised this exception?)
            except xmlrpclib.Error as exc:
                raise error.ConnectorError(' - '.join(exc.args))
        return rpc_method

def __init__(self, host, port=8069, timeout=120, version=None):
        self.host = host
        try:
            int(port)
        except ValueError:
            txt = "The port '{0}' is invalid. An integer is required."
            txt = txt.format(port)
            raise error.ConnectorError(txt)
        else:
            self.port = int(port)
        self._timeout = timeout
        self.version = version

def __init__(self, host, port=8069, timeout=120, version=None):
        self.host = host
        try:
            int(port)
        except (ValueError, TypeError):
            txt = "The port '{0}' is invalid. An integer is required."
            txt = txt.format(port)
            raise error.ConnectorError(txt)
        else:
            self.port = int(port)
        self._timeout = timeout
        self.version = version

def rpc_method(*args):
            try:
                self._sock = xmlrpclib_custom.TimeoutServerProxy(
                    self._url, allow_none=True,
                    timeout=self._connector.timeout)
                sock_method = getattr(self._sock, method, False)
                return sock_method(*args)
            #NOTE: exception raised with these kind of requests:
            #   - execute('fake.model', 'search', [])
            #   - execute('sale.order', 'fake_method')
            except xmlrpclib.Fault as exc:
                # faultCode: error message
                # faultString: Server traceback (following the server version
                # used, a bad request can produce a server traceback, or not).
                raise error.ConnectorError(exc.faultCode, exc.faultString)
            #TODO NEED TEST (when is raised this exception?)
            except xmlrpclib.Error as exc:
                raise error.ConnectorError(' - '.join(exc.args))
        return rpc_method