Update Update Bukkit to 1.7.2

By: mbax <matt@phozop.net>

paper-api/src/main/java/org/bukkit/util/CachedServerIcon.java

@@ -0,0 +1,15 @@
+package org.bukkit.util;
+
+import org.bukkit.Server;
+import org.bukkit.event.server.ServerListPingEvent;
+
+/**
+ * This is a cached version of a server-icon. It's internal representation
+ * and implementation is undefined.
+ *
+ * @see Server#getServerIcon()
+ * @see Server#loadServerIcon(java.awt.image.BufferedImage)
+ * @see Server#loadServerIcon(java.io.File)
+ * @see ServerListPingEvent#setServerIcon(CachedServerIcon)
+ */
+public interface CachedServerIcon {}