Required. Filter to select a subset of conversations to compute the metrics. Must specify a window of the conversation create time to compute the metrics. The returned metrics will be from the range [DATE(starting create time), DATE(ending create time)).

The time granularity of each data point in the time series. Defaults to NONE if this field is unspecified.

Measures to return. Defaults to all measures if this field is unspecified. A valid mask should traverse from the measure field from the response. For example, a path from a measure mask to get the conversation count is "conversation_measure.count".