code: private void setupTextField() {
      searchFld = new CustomTextField();
      GlyphFont fontAwesome = GlyphFontRegistry.font("FontAwesome");
      Glyph glyph = fontAwesome.create(FontAwesome.Glyph.SEARCH).color(Color.GRAY);
      glyph.setPadding(new Insets(0, 3, 0, 5));
      searchFld.setLeft(glyph);
    }
docs: Initializes the TextField and sets the search icon.