e. For example, specifying the
 <code>transactional</code> property to be <code>true</code> but supplying
 a value for <code>className</code> that implements a data source class
 other than <code>XADataSource</code> may not be supported.
 <p>
 Vendor-specific properties may be combined with or used to
  override standard data source properties defined using this annotation.
 <p>
 <code>DataSource</code> properties that are specified and are not supported
 in a given configuration or cannot be mapped to a ve