throws BuzzValidationException
{
if ( link == null || link.getHref() == null || link.getType() == null || link.getRel() == null
|| link.getHref().equals( "" ) || link.getType().equals( "" ) || link.getRel().equals( "" ) )
{
throw new BuzzValidationException( "The content is invalid. null or empty attributes?" );
}
StringBuilder sb = new StringBuilder();
sb.append( "<link rel=\"" );
sb.append( link.getRel() );
sb.append( "\" type=\"" );