[MNG-6073] Addition of a core extension point to the model builder supporting model finalization.

**[Christian Schulte](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=schulte77)** opened **[MNG-6073](https://issues.apache.org/jira/browse/MNG-6073?redirect=false)** and commented

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**Issue Links:**
- [MNG-3825](https://issues.apache.org/jira/browse/MNG-3825) Dependencies with classifier should not always require a version.
(_**"supercedes"**_)

**Remote Links:**
- [Page
](https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=67636510)

The issue body points to MNG-6073 and the linked Maven wiki page; start by reading those and the MNG-3825 context. The payload names no files, tests, extension-point behavior, or acceptance criteria, so the completed change cannot be determined from this issue alone.

Written by the indexing model from the issue text.