return mc.getConnection(null, null);
return mc.getConnection(null, cxRequestInfo);
    public java.lang.Object allocateConnection(ManagedConnectionFactory mcf,       ConnectionRequestInfo cxRequestInfo)       throws ResourceException {       ManagedConnection mc = ((FBManagedConnectionFactory)mcf).createManagedConnection(null, cxRequestInfo);       mc.addConnectionEventListener(this);       return mc.getConnection(null, null);    }