A condition type that checks that monitored resources are reporting
data. The configuration defines a metric and a set of monitored
resources. The predicate is considered in violation when a time series
for the specified metric of a monitored resource does not include any
data in the specified duration.
Specifies the alignment of data points in individual time
series as well as how to combine the retrieved time series
together (such as when aggregating multiple streams on each
resource to a single stream for each resource or when
aggregating streams across all members of a group of
resrouces). Multiple aggregations are applied in the order
specified. This field is similar to the one in the
`MetricService.ListTimeSeries request
</monitoring/api/ref_v3/rest/v3/projects.timeSeries/list>__.
It is advisable to use theListTimeSeries` method when
debugging this field.
The number/percent of time series for which the comparison
must hold in order for the condition to trigger. If
unspecified, then the condition will trigger if the comparison
is true for any of the time series that have been identified
by filter and aggregations.