/// <summary>
 /// Removes the specified field from the packet.
 /// </summary>
 /// <param name='field'>
 /// the field.
 /// </param>
 public void Remove(PpiField field)
 {
     PpiFields.Remove(field);
 }
 /// <summary>
 /// Checks whether the specified field is in the packet.
 /// </summary>
 /// <param name='field'>
 /// <c>true</c> if the field is in the packet, <c>false</c> if not.
 /// </param>
 public bool Contains(PpiField field)
 {
     return PpiFields.Contains(field);
 }
 /// <summary>
 /// Add the specified field to the packet.
 /// </summary>
 /// <param name='field'>
 /// the field.
 /// </param>
 public void Add(PpiField field)
 {
     PpiFields.Add(field);
 }