Add missing GlowItemFrame entity (#2531)

src/main/java/org/spongepowered/api/entity/EntityTypes.java

@@ -31,6 +31,7 @@
 import org.spongepowered.api.entity.display.TextDisplay;
 import org.spongepowered.api.entity.explosive.EndCrystal;
 import org.spongepowered.api.entity.explosive.fused.PrimedTNT;
+import org.spongepowered.api.entity.hanging.GlowItemFrame;
 import org.spongepowered.api.entity.hanging.ItemFrame;
 import org.spongepowered.api.entity.hanging.LeashKnot;
 import org.spongepowered.api.entity.hanging.Painting;
@@ -261,7 +262,7 @@ public final class EntityTypes {
 
     public static final DefaultedRegistryReference<EntityType<Giant>> GIANT = EntityTypes.key(ResourceKey.minecraft("giant"));
 
-    public static final DefaultedRegistryReference<EntityType<ItemFrame>> GLOW_ITEM_FRAME = EntityTypes.key(ResourceKey.minecraft("glow_item_frame"));
+    public static final DefaultedRegistryReference<EntityType<GlowItemFrame>> GLOW_ITEM_FRAME = EntityTypes.key(ResourceKey.minecraft("glow_item_frame"));
 
     public static final DefaultedRegistryReference<EntityType<GlowSquid>> GLOW_SQUID = EntityTypes.key(ResourceKey.minecraft("glow_squid"));
 

src/main/java/org/spongepowered/api/entity/hanging/GlowItemFrame.java

@@ -0,0 +1,31 @@
+/*
+ * This file is part of SpongeAPI, licensed under the MIT License (MIT).
+ *
+ * Copyright (c) SpongePowered <https://www.spongepowered.org>
+ * Copyright (c) contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package org.spongepowered.api.entity.hanging;
+
+/**
+ * Represents a Glow Item Frame.
+ */
+public interface GlowItemFrame extends ItemFrame {
+}