Added method to retrieve all registered permissions

By: Dinnerbone <dinnerbone@dinnerbone.com>

paper-api/src/main/java/org/bukkit/plugin/PluginManager.java

@@ -242,4 +242,13 @@ public interface PluginManager {
      * @return Set containing all subscribed permissions
      */
     public Set<Permissible> getDefaultPermSubscriptions(boolean op);
+
+    /**
+     * Gets a set of all registered permissions.
+     *
+     * This set is a copy and will not be modified live.
+     *
+     * @return Set containing all current registered permissions
+     */
+    public Set<Permission> getPermissions();
 }

paper-api/src/main/java/org/bukkit/plugin/SimplePluginManager.java

@@ -537,4 +537,8 @@ public final class SimplePluginManager implements PluginManager {
             return ImmutableSet.copyOf(map.keySet());
         }
     }
+
+    public Set<Permission> getPermissions() {
+        return new HashSet<Permission>(permissions.values());
+    }
 }