Return one or more named breakdown metadata for all metrics or KPIs in the argument, merging all metadata into a single BreakdownSet.
This is a convenience method most applicable when a single metric or a single kpi is used in the calculation. Because the input metric and KPI data is normally for a collection of dates and times calling this function without first filtering the argument for the desired date will result in all dates being merged together.
var breakdown = metrics.latest().breakdown('product');
In the above example the metrics are first filtered to only contain the last known data point and then the product breakdown is merged and returned. If a single metric is input to the formula the above would be equivalent to calling:
var breakdown = metrics.getLatest('...').breakdown('product');