public virtual void TestIsEmpty()
{
IChemObjectSet <IAtomContainer> set = (IChemObjectSet <IAtomContainer>)NewChemObject();
Assert.IsTrue(set.IsEmpty(), "new container set should be empty");
set.Add(set.Builder.NewAtomContainer());
Assert.IsFalse(set.IsEmpty(), "container set with a single container should not be empty");
set.Clear();
Assert.IsTrue(set.IsEmpty(), "container set with all containers removed should be empty");
}
/// <inheritdoc/> public bool IsEmpty() => (setOfMolecules == null || setOfMolecules.IsEmpty()) && (setOfReactions == null || setOfReactions.IsEmpty()) && (ringSet == null || ringSet.IsEmpty()) && (crystal == null || crystal.IsEmpty());