Show dependencies action not available for Groovy class diagram

Groovy class diagram doesn't work. See attached picture as compared to the Java class.
Aa = Groovy
Foo = Java

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*Imported from [IDEA-139920](https://youtrack.jetbrains.com/issue/IDEA-139920) · Type: Feature · Votes: 3*
*Comments, attachments, dates and reporter are not part of the export — follow the link above for the full history.*

Start by reviewing the linked IDEA-139920 issue and comparing the Groovy class diagram with the Java class diagram described in the report. Identify where the “Show dependencies” action is exposed for the Java case; done means the equivalent action is available for Groovy class diagrams.

Written by the indexing model from the issue text.