make it possible to override the fallback group

cloud-processors-cooldown/src/main/java/org/incendo/cloud/processors/cooldown/Cooldown.java

@@ -42,7 +42,8 @@
 public interface Cooldown<C> extends Command.Builder.Applicable<C> {
 
     /**
-     * Returns a new cooldown with the given {@code duration} using {@link CooldownGroup#command(Command)} as the group.
+     * Returns a new cooldown with the given {@code duration}
+     * using {@link CooldownConfiguration#fallbackGroup()} as the group.
      *
      * @param <C>      command sender type
      * @param duration the duration
@@ -86,7 +87,7 @@ public interface Cooldown<C> extends Command.Builder.Applicable<C> {
 
     /**
      * Returns the group that this instance belongs to.
-     * If set to {@code null} then {@link CooldownGroup#command(Command)} will be used.
+     * If set to {@code null} then {@link CooldownConfiguration#fallbackGroup()} will be used.
      *
      * @return the cooldown group
      */

cloud-processors-cooldown/src/main/java/org/incendo/cloud/processors/cooldown/CooldownConfiguration.java

@@ -23,9 +23,11 @@
 //
 package org.incendo.cloud.processors.cooldown;
 
+import cloud.commandframework.Command;
 import cloud.commandframework.context.CommandContext;
 import java.time.Clock;
 import java.util.List;
+import java.util.function.Function;
 import java.util.function.Predicate;
 import org.apiguardian.api.API;
 import org.checkerframework.checker.nullness.qual.NonNull;
@@ -106,4 +108,14 @@ public interface CooldownConfiguration<C> {
     default @NonNull CooldownProfileFactory profileFactory() {
         return new StandardCooldownProfileFactory(this);
     }
+
+    /**
+     * Returns the function that determines the fallback {@link CooldownGroup} in case no group has been provided
+     * to the {@link Cooldown}.
+     *
+     * @return the fallback group function
+     */
+    default @NonNull Function<@NonNull Command<C>, @NonNull CooldownGroup> fallbackGroup() {
+        return CooldownGroup::command;
+    }
 }

cloud-processors-cooldown/src/main/java/org/incendo/cloud/processors/cooldown/CooldownPostprocessor.java

@@ -68,7 +68,7 @@ public void accept(final @NonNull CommandPostprocessingContext<C> context) {
         if (cooldown.group() != null) {
             group = Objects.requireNonNull(cooldown.group(), "group");
         } else {
-            group = CooldownGroup.command(context.command());
+            group = this.cooldownManager.configuration().fallbackGroup().apply(context.command());
         }
 
         final CooldownInstance cooldownInstance = profile.getCooldown(group);

cloud-processors-cooldown/src/main/java/org/incendo/cloud/processors/cooldown/annotations/Cooldown.java

@@ -23,14 +23,14 @@
 //
 package org.incendo.cloud.processors.cooldown.annotations;
 
-import cloud.commandframework.Command;
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 import java.time.temporal.ChronoUnit;
 import org.apiguardian.api.API;
 import org.checkerframework.checker.nullness.qual.NonNull;
+import org.incendo.cloud.processors.cooldown.CooldownConfiguration;
 
 /**
  * Adds a cooldown to the command.
@@ -59,7 +59,7 @@
     /**
      * Returns the cooldown group.
      *
-     * <p>If this is empty then {@link org.incendo.cloud.processors.cooldown.CooldownGroup#command(Command)} will be used.</p>
+     * <p>If this is empty then {@link CooldownConfiguration#fallbackGroup()} will be used.</p>
      *
      * @return the cooldown group
      */