See: Description
| Class | Description | 
|---|---|
| MetricsAccumulator | AccumulatorV2for Beam metrics captured inMetricsContainerStepMap. | 
| SparkBeamMetricSource | A Spark  Sourcethat is tailored to expose aSparkBeamMetric, wrapping an
 underlyingMetricResultsinstance. | 
| WithMetricsSupport | A  MetricRegistrydecorator-like that supportsBeamMetricSets asGauges. |