@Override
	public String print(ParserWalker walker) throws MemoryAccessException {
		throw new SleighException("Cannot use subtable in expression");
	}
A collection of Constructors or a Symbol representing
one out of a family of Constructors, chosen based on InstructionContext
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/processors/sleigh/symbol/SubtableSymbol.java