@Override
	public BigInteger getValue(Register register, Address address, boolean signed) {
		RegisterValue registerValue = getRegisterValue(register, address);
		if (registerValue != null) {
			return signed ? registerValue.getSignedValue() : registerValue.getUnsignedValue();
		}
		return null;
	}
Flush any cached context not yet written to database
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/util/AbstractStoredProgramContext.java