How to use the @patternfly/patternfly/components/Alert/alert.css.alertTitle function in @patternfly/patternfly

const AlertBody = ({ title, className, children, onClose, closeButtonAriaLabel, ...props }) => (
  <div>
    {onClose &amp;&amp; (
      <button aria-label="{closeButtonAriaLabel}">
        
      </button>
    )}
    {title &amp;&amp; <h4>{title}</h4>}
    {children &amp;&amp; <p>{children}</p>}
  </div>
);

...props
}) => {
  variantLabel = variantLabel || capitalize(AlertVariant[variant]);
  const readerTitle = (
    
      <span>{`${variantLabel} alert:`}</span>
      {title}
    
  );

  const customClassName = css(styles.alert, getModifier(styles, variant, styles.modifiers.info), className);

  return (
    <div aria-label="{ariaLabel}">
      
      <h4>{readerTitle}</h4>
      {children &amp;&amp; (
        <div>
          <p>{children}</p>
        </div>
      )}
      {action &amp;&amp; (
        <div>{React.cloneElement(action, { title, variantLabel })}</div>
      )}
    </div>
  );
};