getEventsInTimeRange

 fun getEventsInTimeRange(
        beginTime: Long, endTime: Long, callback: (MutableList<CalenderEvent>) -> Unit
    ) {
        if (primaryData == null) {
            getPrimaryData {
                performEventsQuery(beginTime, endTime, callback)
            }
        } else {
            performEventsQuery(beginTime, endTime, callback)
        }

    }

    private fun performEventsQuery(
        beginTime: Long, endTime: Long, callback: (MutableList<CalenderEvent>) -> Unit
    ) {
        val selection = CalendarContract.Instances.CALENDAR_ID + " = ?"
        val selectionArgs = arrayOf(primaryData?.CalenderId.toString())
        val builder = CalendarContract.Instances.CONTENT_URI.buildUpon()
        ContentUris.appendId(builder, beginTime)
        ContentUris.appendId(builder, endTime)
        queryCalenderProvider(builder.build(), INSTANCE_PROJECTION, selection, selectionArgs) {
            getEventsFromCursor(it, callback)
        }
    }