`IndexCallback`

The IndexCallback type describes a function that takes an Index's Id and a callback to loop over each Slice within it.

(
  indexId: Id,
  forEachSlice: (sliceCallback: SliceCallback) => void,
): void

	Type	Description
`indexId`	`Id`	The `Id` of the `Index` that the callback can operate on.
`forEachSlice`	`(sliceCallback: SliceCallback) => void`
returns	`void`	This has no return value.

A IndexCallback is provided when using the forEachIndex method, so that you can do something based on every Index in the Indexes object. See that method for specific examples.