code: public static void applyToText(CharSequence charSequence, Typeface typeface) {
          applyToText(charSequence, typeface, 0, charSequence.length());
      }
docs: Applies a {@link CustomTypefaceSpan} along the whole passed {@link CharSequence}.
  The {@code charSequence} must implement {@link Spannable}, otherwise this method
  won't do anything.
  
  @param charSequence a {@code CharSequence} implementing {@code Spannable} to apply the styles
  @param typeface     the {@code Typeface} that you want to be applied on the text
  @see Spannable#setSpan