TimeseriesMetadata CommentBlock addition

Under one of the XML Encoding updates, a DataType CommentBlock was added to TimeseriesMetadata in order to add detail to specific subsections of the timeseries (defined by the applicablePeriod:TM_Period

I also found a comment from Paul in the doc:

In order to accommodate metadata applicable to an irregularly spaced whole timeseries for Domain- Range encoding, an amendment to increase the cardinality of timeseriesMetadata from "1" to "unbounded" has been added to timeseriesDR.xsd.

The amendment allows for dividing the entire irregularly spaced timeseries with different time spacings into segments that do contain regularly spaced time steps. Metadata can then be used to describe each of these individual segments.

With that requirement in mind, I'm wondering if it wouldn't make sense to remodel by merging the concepts from CommentBlock into TimeseriesMetadata, up the cardinality from TVP to "unbounded" as described for DR.

Review the existing TimeseriesMetadata and CommentBlock definitions from the XML Encoding updates, along with the timeseriesDR.xsd amendment that raises timeseriesMetadata cardinality to unbounded. Compare how applicablePeriod and irregularly spaced segments are represented, then seek agreement on the model; done means the merged structure and cardinality are clearly specified.