/// <summary>
 /// Allocates an object that represents a location in IL operation stream.
 /// </summary>
 /// <param name="document">The document containing this method whose body contains this location.</param>
 /// <param name="offset">Offset into the IL Stream.</param>
 internal MethodBodyLocation(MethodBodyDocument document, uint offset) {
   this.document = document;
   this.offset = offset;
 }