public PeriodicInterval FirstIntersection(PeriodicInterval I1)
 {
     throw new NotImplementedException();
 }
 public PeriodicInterval SecondIntersection(PeriodicInterval I2)
 {
     throw new NotImplementedException();
 }
 public PeriodicInterval(PeriodicInterval parameter1)
     : base()
 {
     throw new NotImplementedException();
 }