A closed time interval. It extends from the start time to the end time, and
startTime, endTime. Valid time intervals depend on the
MetricKind of the metric value. In no case can the end time be earlier than
the start time.
For a GAUGE metric, the startTime value is technically optional; if no
value is specified, the start time defaults to the value of the end time,
and the interval represents a single point in time. Such an interval is
valid only for GAUGE metrics, which are point-in-time measurements.
For DELTA and CUMULATIVE metrics, the start time must be later than the end
In all cases, the start time of the next interval must be at least a
microsecond after the end time of the previous interval. Because the
interval is closed, if the start time of a new interval is the same as the
end time of the previous interval, data written at the new start time could
overwrite data written at the previous end time.
- endTime ↔ String
Required. The end of the time interval.
read / write
- startTime ↔ String
Optional. The beginning of the time interval. The default value for the
start time is the end time. The start time must not be later than the end
read / write
- hashCode → int
The hash code for this object.
- runtimeType → Type
A representation of the runtime type of the object.
) → Map< String, Object>
Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
) → String
Returns a string representation of this object.
dynamic other) → bool
The equality operator.