@Override
public boolean isUnwrappableAs(Class unwrapType) {
    return ConnectionProvider.class.equals( unwrapType ) ||
            MultiTenantConnectionProvider.class.equals( unwrapType ) ||
            AbstractMultiTenantConnectionProvider.class.isAssignableFrom( unwrapType );
}

@Override
@SuppressWarnings( {"unchecked"})
public <T> T unwrap(Class<T> unwrapType) {
    if ( isUnwrappableAs( unwrapType ) ) {
        return (T) this;
    }
    else {
        throw new UnknownUnwrapTypeException( unwrapType );
    }
}