in src/main/java/org/apache/maven/reporting/exec/DefaultMavenPluginManagerHelper.java [61:68]
public PluginDescriptor getPluginDescriptor(Plugin plugin, MavenSession session)
throws PluginResolutionException, PluginDescriptorParsingException, InvalidPluginDescriptorException {
RepositorySystemSession repositorySystemSession = session.getRepositorySession();
List<RemoteRepository> remotePluginRepositories =
session.getCurrentProject().getRemotePluginRepositories();
return mavenPluginManager.getPluginDescriptor(plugin, remotePluginRepositories, repositorySystemSession);
}