public void ElementIsNotItalic()
 {
     Assert.IsFalse(ChemFormulaQuery.MakeCommand("F-F").Any(n => n is ItalicCommand));
 }
 public void DontItalicR1()
 {
     Assert.IsFalse(ChemFormulaQuery.MakeCommand("R1").Any(n => n is ItalicCommand));
 }