default Symbol getAssociatedSymbol() {
		long id = getSymbolID();
		return id == -1 ? null : getTrace().getSymbolManager().getSymbolByID(id);
	}
Set the reference type

@param refType the new reference type
Ghidra/Debug/Framework-TraceModeling/src/main/java/ghidra/trace/model/symbol/TraceReference.java