Spring Boot project (Maven) with AXL - NetBeans cannot find generated AXL packages/classes

A Spring Boot project (Maven) using AXL (Schema 12.5), I use NetBeans 12 as development environment.

I can build the project, it builds successful, the target-forder containts the generated AXL classes, etc., but NetBeans still shows errors in the editor, for example on all those import-statements on the AXL classes like

import com.cisco.axl.api._12.RLine;

The errors are, for example:

package com.cisco.alx.api._12 does not exist

All appearances of usage of AXL artifacts are marked as errors, like:

cannot find symbol
symbol: RLine

Why is that problem in the editor? How to configure?

Because of the errors I cannot use the auto-completion, there are no suggestions on what methods are available, etc.

The target-folder is structured like this:

- target
  ...
  - generated
    - cxf (below this start the packages: com.cisco.axl...)
  ...

The solution is, or at least a solution, to modify the pom.xml file, like so:

...
<build>
    <resources>
       ...
        <resource>
            <directory>target/generated/cxf</directory>
                <includes>
                    <include>**/*.java</include>
                </includes>
        </resource>
    </resources>
</build>
...

Now the import statements of the generated AXL Java classes work, no errors anymore!

Let's go NetBeans, let's go!