code: function generateWoff2Font(done) {
  			if (!has(o.types, 'woff2')) {
  				done();
  				return;
  			}
  
  			// Read TTF font
  			var ttfFontPath = wf.getFontPath(o, 'ttf');
  			var ttfFont = fs.readFileSync(ttfFontPath);
  
  			// Remove TTF font if not needed
  			if (!has(o.types, 'ttf')) {
  				fs.unlinkSync(ttfFontPath);
  			}
  
  			// Convert to WOFF2
  			var woffFont = ttf2woff2(ttfFont);
  
  			// Save
  			var woff2FontPath = wf.getFontPath(o, 'woff2');
  			fs.writeFile(woff2FontPath, woffFont, function() {done();});
  		}
docs: Converts TTF font to WOFF2.
  
  @param {Function} done