#306 Create PlayerCommand abstract type

- Create PlayerCommand to handle player-only command checks centrally and consistently
- Adjust tests

src/main/java/fr/xephi/authme/command/executable/logout/LogoutCommand.java

@@ -1,30 +1,18 @@
 package fr.xephi.authme.command.executable.logout;
 
-import fr.xephi.authme.AuthMe;
 import fr.xephi.authme.command.CommandService;
-import fr.xephi.authme.command.ExecutableCommand;
-import fr.xephi.authme.util.Wrapper;
-import org.bukkit.command.CommandSender;
+import fr.xephi.authme.command.PlayerCommand;
 import org.bukkit.entity.Player;
 
 import java.util.List;
 
 /**
+ * Logout command.
  */
-public class LogoutCommand implements ExecutableCommand {
+public class LogoutCommand extends PlayerCommand {
 
     @Override
-    public void executeCommand(CommandSender sender, List<String> arguments, CommandService commandService) {
-        // Make sure the current command executor is a player
-        if (!(sender instanceof Player)) {
-            return;
-        }
-
-        // Get the player instance
-        final AuthMe plugin = Wrapper.getInstance().getAuthMe();
-        final Player player = (Player) sender;
-
-        // Logout the player
-        plugin.getManagement().performLogout(player);
+    public void runCommand(Player player, List<String> arguments, CommandService commandService) {
+        commandService.getManagement().performLogout(player);
     }
 }