The _Guid Class contains the following methods:
equals tests whether the GUID represented by the parameter g2 is equal to the GUID represented by the current _Guid object.
hashCode computes a hash code based on the value of the GUID.
set reinitializes an existing _Guid object from a 16-element byte array.
toByteArray converts a GUID to a 16-element byte array.
toString converts a GUID to its registry string representation.