/// <summary>
/// Checks if the specified offset is valid during this transition.
/// <para>
/// This checks to see if the given offset will be valid at some point in the transition.
/// A gap will always return false.
/// An overlap will return true if the offset is either the before or after offset.
///
/// </para>
/// </summary>
/// <param name="offset"> the offset to check, null returns false </param>
/// <returns> true if the offset is valid during the transition </returns>
public bool IsValidOffset(ZoneOffset offset)
{
return(Gap ? false : (OffsetBefore.Equals(offset) || OffsetAfter.Equals(offset)));
}
