Keeps the options; the thread starts at the first question.
the connection, the bound, and a test backend
Asks a named question and waits for the answer.
one of persistence/directory_queries.js's queries (or
whatever a test backend answers)
its arguments
the answer
The bridge's figures since the process started.
started threads, questions, timeouts, failures and wait times
Ends the thread, for a clean stop and for tests.
a promise that settles when the thread has gone
Asks the store a question synchronously, through a worker thread with a connection of its own (#349).