[safety-reporting] Provide some metrics for a GSN-based argumentation diagram
Structural queries allow users/assessors to conduct searches and ask specific questions about an assurance case diagram. The user should be able to retrieve the following information regarding an assurance case model:
- Top-level goal
- Number of undeveloped and uninstantiated entities
- Number of goals not supported by evidence
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(from redmine: issue id 3794, created on 2019-08-10)
- Relations:
- parent #3786 (closed)