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# endCommandBuffer()

Closes a command buffer to prepare it for submission to a command queue.

```
func endCommandBuffer()
```

## Discussion

Explicitly ending the command buffer allows you to reuse the [`MTL4CommandAllocator`](/documentation/Metal/MTL4CommandAllocator) to start servicing other
command buffers. It is an error to call `commit` on a command buffer previously recording before calling this
method.

---

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