void checkProperty(final String name) {
        if (SecurityActions.getPropertyPrivileged(name) == null) {
            propertiesToClear.add(name);
        }
    }
void checkProperty ( final String name ) { if ( SecurityActions . getPropertyPrivileged ( name ) == null ) { propertiesToClear . add ( name ) ; } }
If the property does not exist it will be added to the properties to be cleared when the context is
{@linkplain #restore() restored}.

@param name the name of the property