@Override
public Object processBlock(final OComposableProcessor iManager, final OCommandContext iContext, final ODocument iConfig,
ODocument iOutput, final boolean iReadOnly) {
if (!(iConfig instanceof ODocument))
throw new OTransactionException("QueryBlock: expected document as content");
String command = parse(iContext, (ODocument) iConfig);
command = (String) resolveValue(iContext, command, true);