padding property
Customizes the padding around the entire bubble.
Defaults to EdgeInsets.all(2.0).
Example:
@override
Widget build(BuildContext context) {
  return SfChat(
    incomingBubbleSettings: ChatBubbleSettings(
      padding: const EdgeInsets.all(2.0),
    ),
    outgoingBubbleSettings: ChatBubbleSettings(
      padding: const EdgeInsets.all(2.0),
    ),
  );
}
Implementation
final EdgeInsetsGeometry padding;