@Override
	public Address getAddress(int opIndex) {
		if (opIndex < 0) {
			return null;
		}
		int opType = instrProto.getOpType(opIndex, this);

		if (OperandType.isAddress(opType)) {
			return instrProto.getAddress(opIndex, this);
		}

		return null;
	}
Return the byte value repeated for all bytes within this instruction or null
if byte values vary.
@return repeated byte value or null if bytes vary
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/util/PseudoInstruction.java