Multi-selection Enumeration Metric

[PeterKranich]

Problem description:
SDC BICEPS does only support single-selection enumeration metrics. However, in some cases a multi-selection enumeration metric is need.

Possible Solutions:

• Extension added to a EnumStringMetric element to support multiple-selections
• Multiple single-selection enumeration metrics which belong together. Each metric will contain one selected value or "unknown" if less are seleccted.

[ToddCooper]

SDPi Workshop #4 -

@PeterKranich - Push to 2.1 & see if still necessary.