Gets a list of components which occur in the given time range.
It's not an error if none is found.
| this |
an CalCache |
| range_start |
start of the range, as time_t, inclusive |
| range_end |
end of the range, as time_t, exclusive |
| out_components |
return location for the components |
| cancellable |
optional Cancellable object, or null |
|
Whether succeeded. |