LabelsProcessor (OpenTelemetry SDK Metrics)

All Known Implementing Classes:

NoopLabelsProcessor
```
public interface LabelsProcessor
```
Labels processor is an abstraction to manipulate instrument labels during metrics capture process.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`io.opentelemetry.api.metrics.common.Labels`	`onLabelsBound(io.opentelemetry.context.Context ctx, io.opentelemetry.api.metrics.common.Labels labels)`	Called when bound synchronous instrument is created or metrics are recorded for non-bound synchronous instrument.

- Method Detail
  - onLabelsBound
```
io.opentelemetry.api.metrics.common.Labels onLabelsBound(io.opentelemetry.context.Context ctx,
                                                         io.opentelemetry.api.metrics.common.Labels labels)
```
    Called when bound synchronous instrument is created or metrics are recorded for non-bound synchronous instrument. Allows to manipulate labels which this instrument is bound to in case of binding operation or labels used for recording values in case of non-bound synchronous instrument. Particular use case includes enriching labels and/or adding more labels depending on the Context
    Please note, this is an experimental API. In case of bound instruments, it will be only invoked upon instrument binding and not when measurements are recorded.
    
    Parameters:
    
    ctx - context of the operation
    
    labels - immutable labels. When processors are chained output labels of the previous one is passed as an input to the next one. Last labels returned by a chain of processors are used for bind() operation.
    
    Returns:
    
    labels to be used as an input to the next processor in chain or bind() operation if this is the last processor