Calls/executes BGPS public API identified by given symbol and passes
    given kwargs as param.

def call(symbol, **kwargs):
    """Calls/executes BGPS public API identified by given symbol and passes
    given kwargs as param.
    """
    LOG.info("API method %s called with args: %s", symbol, str(kwargs))

    # TODO(PH, JK) improve the way api function modules are loaded
    from . import all  # noqa
    if not is_call_registered(symbol):
        message = 'Did not find any method registered by symbol %s' % symbol
        raise MethodNotFound(message)

    if not symbol.startswith('core') and not CORE_MANAGER.started:
        raise CoreNotStarted(desc='CoreManager is not active.')

    call = get_call(symbol)
    try:
        return call(**kwargs)
    except BGPSException as r:
        LOG.error(traceback.format_exc())
        raise r
    except Exception as e:
        LOG.error(traceback.format_exc())
        raise ApiException(desc=str(e))