sPFLib/src/main/java/it/polimi/spf/lib/SPF.java
public boolean lookup(String identifier) {
		try {
			SPFError err = new SPFError();
			boolean found = getService().lookup(getAccessToken(), identifier, err);
			if (err.isOk()) {
				return found;
			} else {
				handleError(err);
				return false;
			}
		} catch (RemoteException e) {
			// TODO Error Management
			Log.d(TAG, "Remote exception while executing lookup on " + identifier, e);
			return false;
		}

	}
public boolean lookup(String identifier) {
		try {
			SPFError err = new SPFError();
			boolean found = getService().lookup(getAccessToken(), identifier, err);
			if (err.isOk()) {
				return found;
			} else {
				handleError(err);
				return false;
			}
		} catch (RemoteException e) {
			// TODO Error Management
			Log.d(TAG, "Remote exception while executing lookup on " + identifier, e);
			return false;
		}

	}
/*
(non-Javadoc)

@see
it.polimi.spf.lib.async.search.SearchInterface#lookup(java.lang.String )