public void GivenCollection_WhenRemovingMany_ThenNumberIsDecremented(int removal)
{
// Arrange
const int initialCount = 5;
_tags.AddMany <string>(initialCount);
// Act
_tags.RemoveMany <string>(removal);
var newCount = _tags.GetCount <string>();
// Assert
Assert.That(newCount, Is.EqualTo(Mathf.Max(initialCount - removal, 0)));
}