/** Represents result of checking whether a username can be set for a chat */
export declare type CheckChatUsernameResultUnion = CheckChatUsernameResultOk | CheckChatUsernameResultUsernameInvalid | CheckChatUsernameResultUsernameOccupied | CheckChatUsernameResultPublicChatsTooMuch | CheckChatUsernameResultPublicGroupsUnavailable;
/** The username can be set */
export interface CheckChatUsernameResultOk {
    _: 'checkChatUsernameResultOk';
}
/** The username is invalid */
export interface CheckChatUsernameResultUsernameInvalid {
    _: 'checkChatUsernameResultUsernameInvalid';
}
/** The username is occupied */
export interface CheckChatUsernameResultUsernameOccupied {
    _: 'checkChatUsernameResultUsernameOccupied';
}
/** The user has too much public chats, one of them should be made private first */
export interface CheckChatUsernameResultPublicChatsTooMuch {
    _: 'checkChatUsernameResultPublicChatsTooMuch';
}
/** The user can't be a member of a public supergroup */
export interface CheckChatUsernameResultPublicGroupsUnavailable {
    _: 'checkChatUsernameResultPublicGroupsUnavailable';
}