Variable $UnknownTransactionConst

$UnknownTransaction: $.Shape<{
    type: "Custom";
    value: number;
} | {
    type: "CannotLookup";
} | {
    type: "NoUnsignedValidator";
}, {
    type: "Custom";
    value: number;
} | {
    type: "CannotLookup";
} | {
    type: "NoUnsignedValidator";
}> = ...