code: @SuppressWarnings("WeakerAccess")
  	protected PDFont mapFont(final Font font, final IFontTextDrawerEnv env) throws IOException, FontFormatException {
  		/*
  		 * If we have any font registering's, we must perform them now
  		 */
  		for (final FontEntry fontEntry : fontFiles) {
  			if (fontEntry.overrideName == null) {
  				Font javaFont = Font.createFont(Font.TRUETYPE_FONT, fontEntry.file);
  				fontEntry.overrideName = javaFont.getFontName();
  			}
  			if (fontEntry.file.getName().toLowerCase(Locale.US).endsWith(".ttc")) {
  				TrueTypeCollection collection = new TrueTypeCollection(fontEntry.file);
  				collection.processAllFonts(new TrueTypeCollection.TrueTypeFontProcessor() {
  					@Override
  					public void process(TrueTypeFont ttf) throws IOException {
  						PDFont pdFont = PDType0Font.load(env.getDocument(), ttf, true);
  						fontMap.put(fontEntry.overrideName, pdFont);
  						fontMap.put(pdFont.getName(), pdFont);
  					}
  				});
  			} else {
  				/*
  				 * We load the font using the file.
  				 */
  				PDFont pdFont = PDType0Font.load(env.getDocument(), fontEntry.file);
  				fontMap.put(fontEntry.overrideName, pdFont);
  			}
  		}
  		fontFiles.clear();
  
  		return fontMap.get(font.getFontName());
  	}
docs: Try to map the java.awt.Font to a PDFont.
  
  @param font
  the java.awt.Font for which a mapping should be found
  @param env
  environment of the font mapper
  @return the PDFont or null if none can be found.