* @return - the <code>Boolean</code> , the value or <code>null</code>, if the attribute is not set and no default value defined.
   */
  public Boolean getPresentationMouseVisibleAttribute() {
    PresentationMouseVisibleAttribute attr = (PresentationMouseVisibleAttribute) getOdfAttribute(OdfDocumentNamespace.PRESENTATION, "mouse-visible");
    if (attr != null) {
      return Boolean.valueOf(attr.booleanValue());
    }
    return Boolean.valueOf(PresentationMouseVisibleAttribute.DEFAULT_VALUE);
  }
  /**