public boolean isStackStorage() {
		if (varnodes == null || varnodes.length == 0) {
			return false;
		}
		// check first varnode for stack use
		Address storageAddr = getFirstVarnode().getAddress();
		return storageAddr.isStackAddress();
	}
@return true if storage consists of a single stack varnode
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/listing/VariableStorage.java