src/main/java/com/google/cloud/dfmetrics/pipelinemanager/MonitoringClient.java [164:170]:
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            jobId);
    ListTimeSeriesRequest request =
        getTimeSeriesRequest(project, filter, timeInterval, getAggregation());
    List<Double> timeSeries = listTimeSeriesAsDouble(request);
    if (timeSeries.isEmpty()) {
      LOG.warn("No monitoring data found. Unable to get Data freshness information.");
      return Optional.empty();
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src/main/java/com/google/cloud/dfmetrics/pipelinemanager/MonitoringClient.java [190:196]:
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            jobId);
    ListTimeSeriesRequest request =
        getTimeSeriesRequest(project, filter, timeInterval, getAggregation());
    List<Double> timeSeries = listTimeSeriesAsDouble(request);
    if (timeSeries.isEmpty()) {
      LOG.warn("No monitoring data found. Unable to get Data freshness information.");
      return Optional.empty();
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