Cleanup parts of the sponge service implementation

common/src/main/java/me/lucko/luckperms/common/logging/ProgressLogger.java

@@ -62,7 +62,7 @@ public class ProgressLogger {
         }
     }
 
-    public void logErr(String msg) {
+    public void logError(String msg) {
         if (this.pluginName == null) {
             this.listeners.forEach(s -> this.logMessage.send(s, "Error -> " + msg));
         } else {
@@ -80,7 +80,6 @@ public class ProgressLogger {
 
     public void logProgress(String msg, int amount) {
         if (amount % NOTIFY_FREQUENCY == 0) {
-            // migrated {} groups so far.
             logAllProgress(msg, amount);
         }
     }

common/src/main/java/me/lucko/luckperms/common/model/NodeMapType.java

@@ -25,8 +25,30 @@
 
 package me.lucko.luckperms.common.model;
 
+import java.util.function.Supplier;
+
 public enum NodeMapType {
 
-    ENDURING, TRANSIENT
+    ENDURING,
+    TRANSIENT;
+
+    // useful methods for fluent/conditional execution
+
+    public void run(Runnable ifEnduring, Runnable ifTransient) {
+        if (this == ENDURING) {
+            ifEnduring.run();
+        } else {
+            ifTransient.run();
+        }
+    }
+
+    public <T> T supply(Supplier<T> ifEnduring, Supplier<T> ifTransient) {
+        if (this == ENDURING) {
+            return ifEnduring.get();
+        } else {
+            return ifTransient.get();
+        }
+    }
+
 
 }

common/src/main/java/me/lucko/luckperms/common/model/PermissionHolder.java

@@ -262,6 +262,10 @@ public abstract class PermissionHolder {
         return this.transientNodes;
     }
 
+    public ImmutableSetMultimap<ImmutableContextSet, Node> getNodes(NodeMapType type) {
+        return getData(type).immutable();
+    }
+
     public ImmutableSetMultimap<ImmutableContextSet, Node> getEnduringNodes() {
         return this.enduringNodes.immutable();
     }