/// It does not have an upper bound on the number of clauses covered in the range. ///
/// If an endpoint is null, it is said to be "open". /// Either or both endpoints may be open. Open endpoints may not be exclusive /// (you can't select all but the first or last term without explicitly specifying the term to exclude.) /// /// ///
true
if the lower endpoint is inclusive true
if the upper endpoint is inclusive o
is equal to this.