type HistogramVec = MetricVec<HistogramVecBuilder>;
Collector that bundles a set of Histograms that all share the
Desc, but have different values for their variable labels. This is used
if you want to count the same thing partitioned by various dimensions
(e.g. HTTP request latencies, partitioned by status code and method).
Create a new
HistogramVec based on the provided
HistogramOpts and partitioned by the given label names. At least
one label name must be provided.
LocalHistogramVec for single thread usage.