PointData (OpenTelemetry SDK Metrics)

All Known Implementing Classes:

DoubleHistogramPointData, DoublePointData, DoubleSummaryPointData, LongPointData
```
@Immutable
public interface PointData
```
A point in the "Metric stream" data model.
This is distinguished from Measurement in that it may have aggregated data, and has its type defined by the metric data model (no longer an instrument).

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`io.opentelemetry.api.common.Attributes`	`getAttributes()`	Returns the attributes associated with this `Point`.
`long`	`getEpochNanos()`	Returns the epoch timestamp in nanos when data were collected, usually it represents the moment when `Instrument.getData()` was called.
`List<Exemplar>`	`getExemplars()`	List of exemplars collected from measurements that were used to form the data point.
`long`	`getStartEpochNanos()`	Returns the start epoch timestamp in nanos of this `Instrument`, usually the time when the metric was created or an aggregation was enabled.

- Method Detail
  - getStartEpochNanos
```
long getStartEpochNanos()
```
    Returns the start epoch timestamp in nanos of this Instrument, usually the time when the metric was created or an aggregation was enabled.
    
    Returns:
    
    the start epoch timestamp in nanos.
  - getEpochNanos
```
long getEpochNanos()
```
    Returns the epoch timestamp in nanos when data were collected, usually it represents the moment when Instrument.getData() was called.
    
    Returns:
    
    the epoch timestamp in nanos.
  - getAttributes
```
io.opentelemetry.api.common.Attributes getAttributes()
```
    Returns the attributes associated with this Point.
    
    Returns:
    
    the attributes associated with this Point.
  - getExemplars
```
List<Exemplar> getExemplars()
```
    List of exemplars collected from measurements that were used to form the data point.