Improve value-String creation of GenericAttribute

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/datastructure/GenericAttribute.java

@@ -26,7 +26,7 @@ public class GenericAttribute {
 
         if (attributeProperty.getObject() instanceof StringAttribute sa) {
             type = "StringAttribute";
-            value = sa.getValue();
+            value = String.format("\"%s\"", sa.getValue());
         } else if (attributeProperty.getObject() instanceof IntAttribute ia) {
             type = "IntAttribute";
             value = ia.getValue().toString();
@@ -41,10 +41,10 @@ public class GenericAttribute {
             value = ua.getValue();
         } else if (attributeProperty.getObject() instanceof MeasureAttribute ma) {
             type = "MeasureAttribute";
-            value = ma.getValue().toString();
+            value = String.format("%s %s", ma.getValue().getValue().toString(), ma.getValue().getUom());
         } else if (attributeProperty.getObject() instanceof CodeAttribute ca) {
-            type = "CodeAttribute";
-            value = ca.getValue().toString();
+            type = String.format("CodeAttribute (%s)", ca.getValue().getLanguage());
+            value = String.format("'''%s''' %n CodeSpace: %s", ca.getValue().getValue(), ca.getValue().getCodeSpace());
         } else {
             logger.warn("GenericAttribute {} is of unknown type {}", attributeProperty, attributeProperty.getObject());
             value = attributeProperty.getObject().getValue().toString();