@Override
		public int compare(HighSymbol sym1, HighSymbol sym2) {
			return sym1.getCategoryIndex() - sym2.getCategoryIndex();
		}
Decode a local symbol scope from the stream

@param decoder is the stream decoder
@throws DecoderException for invalid encodings
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/LocalSymbolMap.java