static (Instruction, Instruction) FindClosureCreatingInstructions(MethodBody body, Instruction callInstruction)
        {
            body.EnsurePreviousAndNextAreSet();
            var cursor = callInstruction;

            while (cursor != null)
            {
                if ((cursor.OpCode == OpCodes.Ldftn) && cursor.Next?.OpCode == OpCodes.Newobj)
                {
                    return(cursor, cursor.Next);
                }

                cursor = cursor.Previous;
            }

            InternalCompilerError.DCICE002(body.Method, callInstruction).Throw();
            return(null, null);
        }