private static int key(int slot, int typeSort) {
		return slot | (typeSort << 16);
	}
@param slot
		Variable index.
@param typeSort
		Variable type sort. See {@link Type#getSort()}.

@return Key of typed variable.
recaf-core/src/main/java/software/coley/recaf/services/deobfuscation/transform/generic/VariableFoldingTransformer.java