public void setExceptionInfo(int exceptionClassId, String exceptionMessage) {
        final IntStringValue exceptionInfo = new IntStringValue(exceptionClassId, exceptionMessage);
        this.setExceptionInfo(exceptionInfo);
    }
Span represent RPC

@author netspider
@author emeroad
agent-module/profiler/src/main/java/com/navercorp/pinpoint/profiler/context/Span.java