This class is the primative class for time units, and should
be extended from when creating new time units. A new class
is typically created with S7 using:
tu_day <- S7::new_class("tu_day", parent = mt_unit)
This class is the primative class for time units, and should
be extended from when creating new time units. A new class
is typically created with S7 using:
tu_day <- S7::new_class("tu_day", parent = mt_unit)