The part of a chart's data variant that a request for another instrument
inherits: the session and the adjustment, which say how bars are observed,
so a benchmark or a comparison lines up with the chart bar for bar. The
currency and the unit belong to the instrument that was asked for, so they
stay behind. Undefined when nothing is inherited. Throws a TypeError for a
malformed variant, like normalizeDataVariant.
The part of a chart's data variant that a request for another instrument inherits: the session and the adjustment, which say how bars are observed, so a benchmark or a comparison lines up with the chart bar for bar. The currency and the unit belong to the instrument that was asked for, so they stay behind. Undefined when nothing is inherited. Throws a TypeError for a malformed variant, like
normalizeDataVariant.