Copies the object if it has not been modified since the specified time, otherwise returns a PreconditionFailed.
Declaration Syntax| C# |
public DateTime UnmodifiedSinceDate { get; set; }
Remarks
Copies the object if it hasn't been modified since the
specified time; otherwise returns a 412 (precondition failed).
Constraints: This property can be used with ETagToMatch,
but cannot be used with other conditional copy properties.