public BigInteger getUnsignedValue() {
		if (isMaskOn()) {
			return getUnsignedValueIgnoreMask();
		}
		return null;
	}
Returns the unsigned value for this register if all the appropriate mask bits are "ON". Otherwise,
null is return.
@return the value for this register if all the appropriate mask bits are "ON". Otherwise,
returns null.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/lang/RegisterValue.java