code: @Override
    public final File
        getBinDirectory(final File baseDir, final String artifactId, final String version, final String aol) {
      File dir = getAolDirectory(baseDir, artifactId, version, aol, Library.EXECUTABLE);
      dir = new File(dir, this.fileLayout.getBinDirectory(aol));
      return dir;
    }
docs: /*
  (non-Javadoc)
  
  @see com.github.maven_nar.NarLayout#getLibDir(java.io.File,
  com.github.maven_nar.AOL,
  java.lang.String)