A new unsigned pointer that reflects the addition of offset to pointer.
The UIntPtr.op_Addition(UIntPtr, int) method defines the addition operation for UIntPtr objects. It enables code such as the following.
code reference: System.UIntPtr.op_Addition#1
Languages that do not support custom operators can call the UIntPtr.Add(UIntPtr, int) method instead.
The addition operation does not throw an exception if the result is too large to represent as a pointer on the specified platform. Instead, it is performed in an unchecked context.