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https://issues.apache.org/jira/browse/MNG-8214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17874457#comment-17874457
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ASF GitHub Bot commented on MNG-8214:
-------------------------------------
kwin commented on PR #1660:
URL: https://github.com/apache/maven/pull/1660#issuecomment-2294799091
This is not about inheritance within MDO models but inheritance of classes
generated from MDO, like for
https://github.com/apache/maven-plugin-tools/blob/9332b09acc08d2e063f12a8158a57ca8ec56fadd/maven-plugin-tools-api/src/main/java/org/apache/maven/tools/plugin/ExtendedMojoDescriptor.java#L31.
This is currently not possible due to the restricted visibility of the
constructors and the lack of a constructor taking a builder as argument.
> Allow extension of the model classes being generated with model.vm
> ------------------------------------------------------------------
>
> Key: MNG-8214
> URL: https://issues.apache.org/jira/browse/MNG-8214
> Project: Maven
> Issue Type: Improvement
> Affects Versions: 4.0.0-beta-3
> Reporter: Konrad Windszus
> Assignee: Konrad Windszus
> Priority: Major
>
> The [model.vm|https://github.com/apache/maven/blob/master/src/mdo/model.vm]
> being used with Maven 4 models generates immutable classes with builders.
> The generated classes cannot be extended easily because
> # the builder's constructor is having default access instead of being
> protected
> (https://github.com/apache/maven/blob/e335f95dfd11468bdf617421fd5e7093a727d1e1/src/mdo/model.vm#L409
> and
> https://github.com/apache/maven/blob/e335f95dfd11468bdf617421fd5e7093a727d1e1/src/mdo/model.vm#L427
> # the builder's build method doesn't rely on generics. Instead an additional
> constructor should be added which takes a parameterized builder object (like
> outlined in https://stackoverflow.com/a/17165079)
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