LimitableTableSource (Flink : Table : Common 2.0-preview1 API)

```
@Deprecated
@Internal
public interface LimitableTableSource<T>
```
Deprecated.
This interface will not be supported in the new source design around DynamicTableSource. Use SupportsLimitPushDown instead. See FLIP-95 for more information.

Adds support for limiting push-down to a TableSource. A TableSource extending this interface is able to limit the number of records.
After pushing down, source only needs to try its best to limit the number of output records, but does not need to guarantee that the number must be less than or equal to the limit.

Method Summary

All Methods Instance Methods Abstract Methods Deprecated Methods
Modifier and Type	Method	Description
`TableSource<T>`	`applyLimit(long limit)`	Deprecated. Check and push down the limit to the table source.
`boolean`	`isLimitPushedDown()`	Deprecated. Return the flag to indicate whether limit push down has been tried.

- Method Detail
  - isLimitPushedDown
```
boolean isLimitPushedDown()
```
    Deprecated.
    
    Return the flag to indicate whether limit push down has been tried. Must return true on the returned instance of applyLimit(long).
  - applyLimit
```
TableSource<T> applyLimit(long limit)
```
    Deprecated.
    
    Check and push down the limit to the table source.
    
    Parameters:
    
    limit - the value which limit the number of records.
    
    Returns:
    
    A new cloned instance of TableSource.