public static function warning( $message, $context = array(), $extra = null )
    {
        return static::log( $message, LoggingLevels::WARNING, $context, $extra );
    }
public static function warning( $message, $context = array(), $extra = null )
    {
        return static::log( $message, LoggingLevels::WARNING, $context, $extra );
    }
public static function warning ( $ message , $ context = array ( ) , $ extra = null ) { return static :: log ( $ message , LoggingLevels :: WARNING , $ context , $ extra ) ; }
Creates a 'warning' log entry

@param string $message The message to send to the log
@param array  $context
@param mixed  $extra

@return bool
Creates a warning log entry