public BasicBinaryDomainCombination( final String id0, final String id1 ) {
if ( ( id0 == null ) || ( id1 == null ) ) {
throw new IllegalArgumentException( "attempt to create binary domain combination using null" );
public BasicBinaryDomainCombination( final String id0, final String id1 ) {
if ( ( id0 == null ) || ( id1 == null ) ) {
throw new IllegalArgumentException( "attempt to create binary domain combination using null" );