public static SpannableString typeface(CharSequence sequence) {
		if (sDefaultTypefaceCollection == null) {
			throw new IllegalStateException("Default typeface collection not initialized. Forgot to call init()?");
		}
		return typeface(sequence, sDefaultTypefaceCollection, Typeface.NORMAL);
	}
public static SpannableString typeface ( CharSequence sequence ) { if ( sDefaultTypefaceCollection == null ) { throw new IllegalStateException ( "Default typeface collection not initialized. Forgot to call init()?" ) ; } return typeface ( sequence , sDefaultTypefaceCollection , Typeface . NORMAL ) ; }
Return spannable string with default typeface style (style: Typeface.NORMAL)
see: http://stackoverflow.com/questions/8607707/how-to-set-a-custom-font-in-the-actionbar-title

@param sequence to typeface typeface to

@throws IllegalStateException {@link #init(TypefaceCollection)} has not been called
@return SpannableString that can be used in TextView.setText() method