in src/main/java/org/apache/sling/xss/impl/style/ValidatingDocumentHandler.java [151:161]
private List<String> validatePropertyValues(String name, LexicalUnit value) {
List<String> validPropertyValues = new ArrayList<>();
while (value != null) {
String stringValue = lexicalValueToString(value);
value = value.getNextLexicalUnit();
boolean isValid = validateProperty(name, stringValue);
if (!isValid) continue;
validPropertyValues.add(stringValue);
}
return validPropertyValues;
}