// histogram.
//
// `filterByLabels` is a map of label names to list of allowed label values to
// filter by. Note that this filtering happens before any renaming of labels.
//
// `renameLabels` is a map of label names to rename. The keys are the original
// label names and the values are the new label names.
//
// `bucketFilter` is a list of bucket values to filter. If this is non-empty,