MessageButton

```
@Serializable() 
public final class MessageButton

                    
```
One option on an interactive flow prompt — Message.buttons, or a gallery card's own button stack.
The visitor answers by sending SendMessagePayload.value set to this option's value. The server matches on value, never on label.

Field Summary

Fields
Modifier and Type	Field	Description
`private final String`	`label`
`private final String`	`value`
`private final String`	`buttonType`

Constructor Summary

Constructors
Constructor	Description
`MessageButton(String label, String value, String buttonType)`

Method Summary

Modifier and Type	Method	Description
`final String`	`getLabel()`	The caption to render.
`final String`	`getValue()`	The match key, sent back as SendMessagePayload.value.
`final String`	`getButtonType()`	Authored kind — `"text"` / `"postback"` / `"url"`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - MessageButton
```
MessageButton(String label, String value, String buttonType)
```
- Method Detail
  - getLabel
```
 final String getLabel()
```
    The caption to render. Wire key label on this lane — the platform GraphQL read spells the same field text, so payloads from that source are not interchangeable with these.
  - getValue
```
 final String getValue()
```
    The match key, sent back as SendMessagePayload.value.
  - getButtonType
```
 final String getButtonType()
```
    Authored kind — "text" / "postback" / "url". A free string, not an enum: an unknown kind must degrade, not fail to decode.
    The wire key is type; without the SerialName it would serialize as buttonType and decode to empty, silently turning every URL button into a plain postback.