getAllMessages()
                getAllMessages(boolean  $clearMessages = true) : array
                Get all status messages and delete them if required
                [
    [
        'status' => STATUS_INFO|STATUS_WARNING|STATUS_ERROR,
        'content' => string,
    ],
    ...
]
                                    Parameters
                    
                                                    
                                | boolean | 
                                $clearMessages  | 
                                [optional] Default is true.  | 
                            
                                            
                
                
                                    Returns
                    array