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# grantCapability(_:invalidationHandler:)

Grants the specified capability to the process and observes an invalidation closure.

```
func grantCapability(_ capability: ProcessCapability, invalidationHandler: @escaping () -> Void) throws -> ProcessCapability.Grant
```

## Parameters

`capability`

The capability to grant.

`invalidationHandler`

A closure that the system calls when the capability becomes invalid.

## Return Value

A [`ProcessCapability.Grant`](/documentation/BrowserEngineKit/ProcessCapability/Grant) object that represents the granted capability.

## Discussion

When the process no longer needs the capability, call [`invalidate()`](/documentation/BrowserEngineKit/ProcessCapability/Grant/invalidate()) on the returned object.

---

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