count property
The total count of documents that match target_id.
If different from the count of documents in the client that match, the
client must manually determine which documents no longer match the target.
The client can use the unchanged_names bloom filter to assist with this
determination by testing ALL the document names against the filter; if the
document name is NOT in the filter, it means the document no longer
matches the target.
Implementation
core.int? count;