Session session = SessionManager.getInstance().getSession(sessionId);
Session session = getSession(sessionId);
	public boolean removeCollection(String sessionId, String collection)		throws RemoteException {		Session session = SessionManager.getInstance().getSession(sessionId);		DBBroker broker = null;		try {			broker = pool.get(session.getUser());			if (broker.getCollection(collection) == null)				return false;			return broker.removeCollection(collection);		} catch (Exception e) {			LOG.debug(e.getMessage(), e);			throw new RemoteException(e.getMessage(), e);		} finally {			pool.release(broker);		}	}