From 2b6c271cc778c0d6876e113f5229097ad22884ad Mon Sep 17 00:00:00 2001
From: Frank van der Heijden <frank.boekanier@gmail.com>
Date: Sun, 13 Sep 2020 19:11:40 +0200
Subject: [PATCH] Add ability to check for command alias existence in api
 module

---
 .../com/velocitypowered/api/command/CommandManager.java   | 8 ++++++++
 .../proxy/command/VelocityCommandManager.java             | 1 +
 2 files changed, 9 insertions(+)

diff --git a/api/src/main/java/com/velocitypowered/api/command/CommandManager.java b/api/src/main/java/com/velocitypowered/api/command/CommandManager.java
index b688adc63..68c3ed2c8 100644
--- a/api/src/main/java/com/velocitypowered/api/command/CommandManager.java
+++ b/api/src/main/java/com/velocitypowered/api/command/CommandManager.java
@@ -122,4 +122,12 @@ public interface CommandManager {
    *         Can be completed exceptionally if an exception is thrown during execution.
    */
   CompletableFuture<Boolean> executeImmediatelyAsync(CommandSource source, String cmdLine);
+
+  /**
+   * Returns whether the given alias is registered on this manager.
+   *
+   * @param alias the command alias to check
+   * @return {@code true} if the alias is registered
+   */
+  boolean hasCommand(String alias);
 }
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommandManager.java b/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommandManager.java
index cd5f034d7..b2d4e4f27 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommandManager.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommandManager.java
@@ -227,6 +227,7 @@ public class VelocityCommandManager implements CommandManager {
    * @param alias the command alias to check
    * @return {@code true} if the alias is registered
    */
+  @Override
   public boolean hasCommand(final String alias) {
     Preconditions.checkNotNull(alias, "alias");
     return dispatcher.getRoot().getChild(alias.toLowerCase(Locale.ENGLISH)) != null;