@ThreadSafe
public class QueryTracker<T extends QueryTracker.TrackedQuery>
extends Object

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`addQuery(T execution)`
`void`	`expireQuery(QueryId queryId)`	Query is finished and expiration should begin.
`Collection<T>`	`getAllQueries()`
`T`	`getQuery(QueryId queryId)`
`void`	`start()`
`void`	`stop()`
`Optional<T>`	`tryGetQuery(QueryId queryId)`

public QueryTracker(QueryManagerConfig queryManagerConfig,
                    ScheduledExecutorService queryManagementExecutor)

public T getQuery(QueryId queryId)
           throws NoSuchElementException

public Optional<T> tryGetQuery(QueryId queryId)

public boolean addQuery(T execution)

expireQuery
```
public void expireQuery(QueryId queryId)
```
Query is finished and expiration should begin.

Class QueryTracker<T extends QueryTracker.TrackedQuery>