Method isGT_

src/main/java/gregapi/util/ST.java:129–129

(ItemStack aStack)

	public static boolean isGT (Block aBlock) {return aBlock instanceof IItemGT;}
	public static boolean isGT (ItemStack aStack) {return aStack != null && isGT_(aStack);}
	public static boolean isGT_(ItemStack aStack) {return isGT(aStack.getItem());}
	
	public static boolean   valid(Block aBlock) {return aBlock != null && aBlock != NB;}
	public static boolean invalid(Block aBlock) {return aBlock == null || aBlock == NB;}