CardRemovalWaiterNonBlockingSpi (Keyple Plugin Java API - 2.2.0)

```
public interface CardRemovalWaiterNonBlockingSpi
```
This SPI is specifically designed for plugins that don't handle card removal autonomously but requires the sending of an APDU to detect the card removal.
When a plugin implements this SPI, the ReaderSpi.transmitApdu(byte[]) method will be called periodically by the service when a card removal is expected. The card is considered removed when the transmission fails.
The value returned by the getCardRemovalMonitoringSleepDuration() will be used as an argument to Thread.sleep(long) between two calls to ReaderSpi.transmitApdu(byte[]).
A typical example of readers conforming to this mode of operation are terminals embedding a slave RF communication module without card presence feature.

Since:

2.2.0

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`getCardRemovalMonitoringSleepDuration()`	Provides the value of the sleep duration (in milliseconds) inserted between two calls to `ReaderSpi.transmitApdu(byte[])`.

- Method Detail
  - getCardRemovalMonitoringSleepDuration
```
int getCardRemovalMonitoringSleepDuration()
```
    Provides the value of the sleep duration (in milliseconds) inserted between two calls to ReaderSpi.transmitApdu(byte[]).
    
    Returns:
    
    A positive value (0 is allowed).
    
    Since:
    
    2.2.0