1. Dart
2. dart:html
3. MediaSession
4. setActionHandler method

##### MediaSession class

1. Properties
2. metadata
3. playbackState
4. hashCode
5. runtimeType
6. Methods
7. setActionHandler
8. noSuchMethod
9. toString
10. Operators
11. operator ==

# setActionHandler method

void setActionHandler (String action, MediaSessionActionHandler handler)

## Implementation

    void setActionHandler(String action, MediaSessionActionHandler handler)
        native;