Reverse engineering SourceArtifacts

Note the following rules for reverse engineering and locating a SourceArtifact under a class:

• If only one class is mapped to the artifact, the artifact is located under the class it is mapped to.
• If more than one class is mapped, the artifact is located under the first class. Priority is given to a class with the same of the file.
• If no class is mapped to the artifact, the artifact is located under the package.
• External files are imported under the component.