@Override
		public BigInteger getValue(Register register, boolean signed) {
			if (contextValue != null && register.isProcessorContext()) {
				return contextValue.getRegisterValue(register).getUnsignedValue();
			}
			return null;
		}
InstructionContext is an immutable context for use when minting pseudo instructions.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/disassemble/Disassembler.java