BookStateFor: StorageDescriptor<
[
Key: Enum<
{
Aggregate: Enum<
{ Here: undefined; Parent: undefined; Sibling: number },
>;
UnregisterMessageOrigin: undefined;
},
>,
],
{
begin: number;
count: number;
end: number;
message_count: bigint;
ready_neighbours?: {
next: Enum<
{
Aggregate: Enum<
{ Here: undefined; Parent: undefined; Sibling: number },
>;
UnregisterMessageOrigin: undefined;
},
>;
prev: Enum<
{
Aggregate: Enum<
{ Here: undefined; Parent: undefined; Sibling: number },
>;
UnregisterMessageOrigin: undefined;
},
>;
};
size: bigint;
},
false,
never,
>
The index of the first and last (non-empty) pages.