Gauge (Apache BookKeeper :: Parent 4.18.0-SNAPSHOT API)

```
public interface Gauge<T extends java.lang.Number>
```
A guage is a value that has only one value at a specific point in time. An example is the number of elements in a queue. The value of T must be some numeric type.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  T getDefaultValue()
  
  T getSample()

- Method Detail
  - getDefaultValue
```
T getDefaultValue()
```
  - getSample
```
T getSample()
```