## applyPrediction · function

Run the provided function, while treating all changes to Observables as predictions,
meaning they will be reverted when changes come back from the server (or some other
async source).

**Signature:** `(predictFunc: () => void) => Patch`

**Parameters:**

- `predictFunc: () => void` - The function to run. It will generally modify some Observables
to immediately reflect state (as closely as possible) that we expect the server
to communicate back to us later on.

**Returns:** A `Patch` object. Don't modify it. This is only meant to be passed to `applyCanon`.