Class
Common
```kotlin
class MutableIntervalList : IntervalList
```
Mutable version of `IntervalList`. It allows you to add new intervals via `addInterval`.
Note: this class is a part of `LazyLayout` harness that allows for building custom lazy layouts.
LazyLayout and all corresponding APIs are still under development and are subject to change.
## Functions
addInterval
```kotlin
fun addInterval(size: Int, value: T)
```
Adds a new interval into this list.
#### Parameters
| | |
| --- | --- |
| size | the amount of items in the new interval. |
| value | the value representing this interval. |