position = anIdentifier.indexOf( LIBRARY_QUALIFIER_SEPARATOR );
if (position>=0) {
libraryName = anIdentifier.substring(0, position);
qualifier = anIdentifier.substring(position + LIBRARY_QUALIFIER_SEPARATOR.length());
position = anIdentifier.indexOf( LIBRARY_QUALIFIER_SEPARATOR );
if (position>=0) {
libraryName = anIdentifier.substring(0, position);
qualifier = anIdentifier.substring(position + LIBRARY_QUALIFIER_SEPARATOR.length());