code: @SuppressWarnings("WeakerAccess")
  	public void registerFont(String name, PDFont font) {
  		fontMap.put(name, font);
  	}
docs: Register a font which is already associated with the PDDocument
  
  @param name
  the name of the font as returned by
  {@link java.awt.Font#getFontName()}. This name is used for the
  mapping the java.awt.Font to this PDFont.
  @param font
  the PDFont to use. This font must be loaded in the current
  document.