more fixes related to MR !6

changed isCustomProperty to static
minor changes for formatting

simpleexample2/core/src/main/java/simpleex/core/MetaData.java

@@ -21,7 +21,7 @@ public class MetaData {
   /**
    * the list containing standard properties associated to location metadata
    */
-  final public static List<String> STD_PROPERTIES = Collections.unmodifiableList(Arrays.asList(NAME_PROPERTY, DESCRIPTION_PROPERTY));
+  public final static List<String> STD_PROPERTIES = Collections.unmodifiableList(Arrays.asList(NAME_PROPERTY, DESCRIPTION_PROPERTY));
  
   
   private Collection<String> tags;
@@ -291,7 +291,7 @@ public class MetaData {
    * @param propertyName the property name to check
    * @return true if custom false if standard prop
    */
-  public boolean  isCustomProperty(String propertyName) {
+  public  static boolean  isCustomProperty(String propertyName) {
     return !(STD_PROPERTIES.contains(propertyName));
   }
   

simpleexample2/fxui/src/main/java/simpleex/ui/MetaDataEditorController.java

@@ -179,7 +179,7 @@ public class MetaDataEditorController {
   public void onAddUpdateProperty(ActionEvent event) {
     final String newKey = newKeyInput.getText();
     final String newValue = newValueInput.getText();
-    if(!newKey.isBlank() && (!MetaData.STD_PROPERTIES.contains(newKey))) {
+    if(!newKey.isBlank() && (MetaData.isCustomProperty(newKey))) {
         latlong.getMetaData().setProperty(newKey, newValue);
         updatePropertiesTable();
     }