Meaning of datasets total number in service response when a datasettypes filter was defined in the query

[CarstenHollmann]

The service representation of v3 shows the total number of datasets and of the specific types (timeseries, trajectories, profiles, ...).

But if you query the service with a datasetTypes filter, e.g. for timeseries, then what does the total number mean?

• Number of all datasets of the service
• Number of timeseries datasets of the service