code: @Override
      protected MavenFormatStage createFormatStage(final Collection<MavenResolvedArtifact> filteredArtifacts)
              throws IllegalArgumentException {
          assert filteredArtifacts != null : "filtered artifacts are required";
          return new MavenFormatStageImpl(filteredArtifacts);
      }
docs: {@inheritDoc}
  
  @see org.jboss.shrinkwrap.resolver.impl.maven.MavenStrategyStageBaseImpl#createFormatStage(java.util.Collection)