/**
 * gives a debug version of blog cleared of all internal Variables
 *
 * @return object the cleared object
 * @author Thomas Allmer <at@delusionworld.com>
 */
public function __debug() {
	$keepVars = get_class_vars ('F3\Blog\Domain\Model\Blog');
	// unsetting posts here as they currently don't have their own __debug() function
	// if every Class has a __debug() you can view everything; should be best included with the AOP Development Proxy
	unset( $keepVars['posts'] );

	foreach( $this as $var => $value ) {
		if( !array_key_exists($var, $keepVars) )
			unset( $this->$var );
		if ( is_object($value) && method_exists($var, '__debug') )
			$this->$var = $value->__debug();
	}

	return $this;
}