Method hasKey

src/main/java/net/minecraft/nbt/NBTTagCompound.java:181–184

Returns whether the given string has been previously stored as a key in the map.

(String key)

     * Returns whether the given string has been previously stored as a key in the map.
     */
    public boolean hasKey(String key)
    {
        return this.tagMap.containsKey(key);
    }

    public boolean hasKey(String key, int type)
    {