question: private XSDatatype deriveSimpleType ( XSDatatype baseType , Element xsdRestriction ) { TypeIncubator incubator = new TypeIncubator ( baseType ) ; ValidationContext context = null ; try { for ( Iterator < Element > iter = xsdRestriction . elementIterator ( ) ; iter . hasNext ( ) ; ) { Element element = iter . next ( ) ; String name = element . getName ( ) ; String value = element . attributeValue ( "value" ) ; boolean fixed = AttributeHelper . booleanValue ( element , "fixed" ) ; incubator . addFacet ( name , value , fixed , context ) ; } String newTypeName = null ; return incubator . derive ( "" , newTypeName ) ; } catch ( DatatypeException e ) { onSchemaError ( "Invalid restriction: " + e . getMessage ( ) + " when trying to build restriction: " + xsdRestriction ) ; return null ; } }
target:  Derives a new type from a base type and a set of restrictions