Interface
Common
```kotlin
interface LazyLayoutKeyIndexMap
```
A key-index mapping that can be used by the `LazyLayoutItemProvider` to keep track of indices and
keys in `LazyLayout`.
## Functions
getIndex
```kotlin
fun getIndex(key: Any): Int
```
#### Returns
| | |
| --- | --- |
| | current index for given `key` or `-1` if not found. |
getKey
```kotlin
fun getKey(index: Int): Any?
```
#### Returns
| | |
| --- | --- |
| | key for a given `index` if it is known, or null otherwise. |