question: public List < String > compactExtension ( String value , int start ) { List < String > result = new ArrayList < String > ( ) ; if ( start > value . length ( ) ) { result . add ( value ) ; return result ; } WbXmlExtensionDef extDef = new WbXmlExtensionDef ( value . substring ( start ) , ( byte ) 0x0 ) ; for ( WbXmlExtensionDef ext : extsByValue . tailSet ( extDef ) ) { List < String > found = matches ( value , ext . getValue ( ) , start , false ) ; if ( found != null ) { return found ; } } result . add ( value ) ; return result ; }
target:  Similar method of the recursive version of compactAttributeValue. This method searches over the extensions in order to compact the value in a list of defined extensions.