openTecanLiquidClass = new JMenuItem(new GoTecanLiquidClass(this));
menuConfiguration.add(openTecanLiquidClass);
openTecanHolders = new JMenuItem(new GoTecanHolders(this));
menuConfiguration.add(openTecanHolders);
menuConfiguration.addSeparator();
openChemicalLiquidClassAssociation = new JMenuItem(new GoChemicalLiquidClassAssociation(this));
menuConfiguration.add(openChemicalLiquidClassAssociation);
menuBar.add(menuConfiguration);
setJMenuBar(menuBar);