public void initMeta(String metricName, int scopeId) {
        this.metadata.setMetricsName(metricName);
        this.metadata.setScope(scopeId);
    }
This method is called in {@link MeterSystem#create} process through dynamic Java codes.

@param metricName metric name
@param scopeId    scope Id defined in {@link DefaultScopeDefine}
oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/analysis/meter/Meter.java