public final class InviteRequest

Describes the invite to mint. Immutable; build one with create.

InviteRequest request = InviteRequest.create()
        .campaign("spring")
        .channel("whatsapp")
        .title("Join me")
        .description("I am using this and thought of you.")
        .payload("room-42")
        .build();

title, description and imageUrl drive the preview card the link service renders, which is what makes a shared link look like an invitation in a messaging application rather than a bare address.

Builder.build validates and throws IllegalArgumentException naming the offending field, so a mistake surfaces at the call you can see rather than as a silently dropped value later.