@Override
	public void setFallThrough(Address addr) {
		if (SystemUtilities.isEqual(addr, getDefaultFallThrough())) {
			fallThroughOverride = null;
		}
		else if (addr == null) {
			fallThroughOverride = Address.NO_ADDRESS;
		}
		else {
			fallThroughOverride = addr;
		}
	}
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