description

# pauseCapability property Null safety

Capability? pauseCapability
final

Capability granting the ability to pause the isolate.

This capability is required by pause. If the capability is `null`, or if it is not the correct pause capability of the isolate identified by controlPort, then calls to pause will have no effect.

If the isolate is spawned in a paused state, use this capability as argument to the resume method in order to resume the paused isolate.

## Implementation

    final Capability? pauseCapability