Get seconds until next cron execution.
Example:
# Example for cron_next
println cron_next("0 0 * * *")
Parse cron schedule and return structured description of what it means.
Example:
# Example for cron_parse
println cron_parse("0 0 * * *")
Validate cron schedule syntax.
Example:
# Example for cron_validate
println cron_validate("0 0 * * *")
Convert Quartz format schedule to cron format.
Example:
# Example for quartz_to_cron
println quartz_to_cron("0 0 12 * * ?")