@Override
    public String getMethodName(long methodId, byte methodType) {
        String result = methodNames.get(methodId);
        if (result == null) {
            methodNames.put(methodId, result = resolveMethodName(methodId, methodType));
        }
        return result;
    }
JFRConverter is copied from one.jfr.JfrConverter. Because need to
add collectMultiEvents and getEventAggregator methods, to parse 
and process multiple events at one time.
oap-server/server-library/library-async-profiler-jfr-parser/src/main/java/one/jfr/JFRConverter.java