Translate the internal method data structures into a PlantUML activity diagram. Start minimal: basic blocks in order, later extend with control flow. **Scope** * Implement translator: method data structure -\> PlantUML activity diagram * Minimal version: * represent each basic block as an activity node (content = instruction strings) * connect blocks in a simple order (or via control-flow links if available) * Output as `.svg` image **Dependencies** * #3+s