SPIGOT-4650: Charging API for Vex

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/entity/Vex.java

@@ -3,4 +3,23 @@ package org.bukkit.entity;
 /**
  * Represents a Vex.
  */
-public interface Vex extends Monster { }
+public interface Vex extends Monster {
+
+    /**
+     * Gets the charging state of this entity.
+     *
+     * When this entity is charging it will having a glowing red texture.
+     *
+     * @return charging state
+     */
+    boolean isCharging();
+
+    /**
+     * Sets the charging state of this entity.
+     *
+     * When this entity is charging it will having a glowing red texture.
+     *
+     * @param charging new state
+     */
+    void setCharging(boolean charging);
+}