code: @Override
    public final File getLibDirectory(final File baseDir, final String artifactId, final String version,
        final String aol, final String type) throws MojoFailureException {
      if (type.equals(Library.EXECUTABLE)) {
        throw new MojoFailureException("INTERNAL ERROR, Replace call to getLibDirectory with getBinDirectory");
      }
  
      final File dir = new File(baseDir, this.fileLayout.getLibDirectory(aol, type));
      return dir;
    }
docs: /*
  (non-Javadoc)
  
  @see com.github.maven_nar.NarLayout#getLibDir(java.io.File,
  com.github.maven_nar.AOL, String type)