Append a cadence with period period_ms to the cadence table and return its ID.
The period is a whole number of minutes, at most one year, and not already in
the table, which holds at most 16 cadences. A new cadence is disabled on every
underlying until set_template_cadence_config sets its terms; periods never
change, so retire a cadence by disabling it.
Append a cadence with period
period_msto the cadence table and return its ID. The period is a whole number of minutes, at most one year, and not already in the table, which holds at most 16 cadences. A new cadence is disabled on every underlying untilset_template_cadence_configsets its terms; periods never change, so retire a cadence by disabling it.