code: public function validator($varInput)
  	{
  		if (!\is_array($varInput))
  		{
  			return null; // see #382
  		}
  
  		foreach ($varInput as $k=>$v)
  		{
  			if ($k != 'language')
  			{
  				$varInput[$k] = array_map('trim', $v);
  			}
  			else
  			{
  				if ($v != '')
  				{
  					// Take the fields from the DCA (see #4327)
  					$varInput[$v] = array_combine(array_keys($this->metaFields), array_fill(0, \count($this->metaFields), ''));
  				}
  
  				unset($varInput[$k]);
  			}
  		}
  
  		return $varInput;
  	}
docs: Trim the values and add new languages if necessary
  
  @param mixed $varInput
  
  @return mixed