private StringBuilder prepareCsvBuilder() {
    StringBuilder csvBuilder = new StringBuilder();
    csvBuilder.append(CliStrings.SHOW_METRICS__TYPE__HEADER);
    csvBuilder.append(',');
    csvBuilder.append(CliStrings.SHOW_METRICS__METRIC__HEADER);
    csvBuilder.append(',');
    csvBuilder.append(CliStrings.SHOW_METRICS__VALUE__HEADER);
    csvBuilder.append('\n');
    return csvBuilder;
  }
Gets the metrics of region on a given member

@return ResultData with required Region statistics or ErrorResultData if Region MBean is not
        found to gather metrics
geode-gfsh/src/main/java/org/apache/geode/management/internal/cli/commands/ShowMetricsCommand.java