Interface
Common
```kotlin
interface FillableData
```
Represents a single piece of data for autofill purposes.
An instance of `FillableData` is expected to hold a value of a single specific type. Consumers
can use the corresponding property to retrieve the value. For any given instance, only the
property that matches the underlying data's type will return a non-null value. All other
properties will return `null`.
## Properties
Common
```kotlin
val textValue: CharSequence?
```
The `CharSequence` (text) representation of the data, or `null` if none is available.
Common
```kotlin
val booleanValue: Boolean?
```
The `Boolean` representation of the data, or `null` if none is available.
Common
```kotlin
val listIndexValue: Int?
```
The `Int` (integer) representation of the data, or `null` if none is available.
Common
```kotlin
val dateMillisValue: Long?
```
The date in milliseconds since epoch, or `null` if none is available.
## Functions
getListIndexOrDefault
```kotlin
fun getListIndexOrDefault(defaultValue: Int): Int
```
Returns the list index value if it is available, otherwise returns the `defaultValue`.
getDateMillisOrDefault
```kotlin
fun getDateMillisOrDefault(defaultValue: Long): Long
```
Returns the date in milliseconds value if it is available, otherwise returns the
`defaultValue`.