@Override
	public void decode(Decoder decoder, SleighLanguage sleigh) throws DecoderException {
//		int el = decoder.openElement(ELEM_VALUE_SYM);
		patval = (PatternValue) PatternExpression.decodeExpression(decoder, sleigh);
		decoder.closeElementSkipping(ELEM_VALUE_SYM.id());
	}
A variable with its semantic (and printing) value equal to a fixed
mapping of its pattern
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/processors/sleigh/symbol/ValueSymbol.java