Then why was it used for Paintings? https://github.com/Bukkit/CraftBukkit/blob/master/src/main/java/org/bukkit/craftbukkit/entity/CraftPainting.java#L54

https://github.com/Bukkit/CraftBukkit/commit/d47c16330b866f7babf80e24ad25687b58f954c4