public AgentTimeHistogram getSourceAgentTimeSeriesHistogram() {
        // we need Target (to)'s time since time in link is RPC-based
        AgentTimeHistogramBuilder builder = new AgentTimeHistogramBuilder(toNode.getApplication(), range);
        return builder.buildSource(inLink);
    }
A class that describes a relationship between apps in application map

@author netspider
@author emeroad
@author HyunGil Jeong
web/src/main/java/com/navercorp/pinpoint/web/applicationmap/link/Link.java