public static void addElement(@Nonnull StringBuilder buf, @Nonnull String separator, @Nonnull String element) {
    """
	Appends the separator string, if <code>{@link StringBuilder#length() buf.lenght()} &gt; 0</code> and then appends the element.
    """
        if (buf.length() > 0) {
            buf.append(separator);
        }
        buf.append(element);
    }
public static void addElement(@Nonnull StringBuilder buf, @Nonnull String separator, @Nonnull String element) {
        if (buf.length() > 0) {
            buf.append(separator);
        }
        buf.append(element);
    }
public static void addElement ( @ Nonnull StringBuilder buf , @ Nonnull String separator , @ Nonnull String element ) { if ( buf . length ( ) > 0 ) { buf . append ( separator ) ; } buf . append ( element ) ; }
Appends the separator string, if <code>{@link StringBuilder#length() buf.lenght()} &gt; 0</code> and then appends the element.
Appends the separator string if <code > {