@Override
	public void getFixedHandle(FixedHandle hand, ParserWalker walker) {
		hand.space = walker.getCurSpace();
		hand.offset_space = null;
		hand.offset_offset = walker.getAddr().getOffset();
		hand.size = hand.space.getPointerSize();
	}
TripleSymbol with semantic value equal to offset of instruction's
current address
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/processors/sleigh/symbol/StartSymbol.java