#1014 Use ConfigMe improvements to create custom Enum set property

src/main/java/fr/xephi/authme/settings/EnumSetProperty.java

@@ -1,38 +1,38 @@
 package fr.xephi.authme.settings;
 
-import ch.jalu.configme.SettingsManager;
-import ch.jalu.configme.properties.StringListProperty;
+import ch.jalu.configme.properties.Property;
+import ch.jalu.configme.resource.PropertyResource;
 
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Set;
 import java.util.stream.Collectors;
 
+import static com.google.common.collect.Sets.newHashSet;
+
 /**
  * Property whose value is a set of entries of a given enum.
  */
-// TODO #1014: This property type currently extends StringListProperty with a dedicated method  to convert the values
-// into a Set of the selected enum due to multiple issues on ConfigMe's side.
-public class EnumSetProperty<E extends Enum<E>> extends StringListProperty {
+public class EnumSetProperty<E extends Enum<E>> extends Property<Set<E>> {
 
     private final Class<E> enumClass;
 
-    public EnumSetProperty(Class<E> enumClass, String path, String... values) {
-        super(path, values);
+    @SafeVarargs
+    public EnumSetProperty(Class<E> enumClass, String path, E... values) {
+        super(path, newHashSet(values));
         this.enumClass = enumClass;
     }
 
-    /**
-     * Returns the value as a set of enum entries.
-     *
-     * @param settings the settings manager to look up the raw value with
-     * @return the property's value as mapped enum entries
-     */
-    public Set<E> asEnumSet(SettingsManager settings) {
-        List<String> entries = settings.getProperty(this);
-        return entries.stream()
-            .map(str -> toEnum(str))
-            .filter(e -> e != null)
-            .collect(Collectors.toSet());
+    @Override
+    protected Set<E> getFromResource(PropertyResource resource) {
+        List<?> elements = resource.getList(getPath());
+        if (elements != null) {
+            return elements.stream()
+                .map(val -> toEnum(String.valueOf(val)))
+                .filter(e -> e != null)
+                .collect(Collectors.toCollection(LinkedHashSet::new));
+        }
+        return null;
     }
 
     private E toEnum(String str) {