IronPython.Modules.MemoryHolder.WriteIntPtr C# (CSharp) Method

        public void WriteIntPtr(int offset, IntPtr value) {
            Marshal.WriteIntPtr(_data, offset, value);
            GC.KeepAlive(this);
        }

            object INativeType.SetValue(MemoryHolder address, int offset, object value)
            {
                Pointer ptr;
                _Array  array;

                if (value == null)
                {
                    address.WriteIntPtr(offset, IntPtr.Zero);
                }
                else if (value is int)
                {
                    address.WriteIntPtr(offset, new IntPtr((int)value));
                }
                else if (value is BigInteger)
                {
                    address.WriteIntPtr(offset, new IntPtr((long)(BigInteger)value));
                }
                else if ((ptr = value as Pointer) != null)
                {
                    address.WriteIntPtr(offset, ptr._memHolder.ReadMemoryHolder(0));
                    return(PythonOps.MakeDictFromItems(ptr, "0", ptr._objects, "1"));
                }
                else if ((array = value as _Array) != null)
                {
                    address.WriteIntPtr(offset, array._memHolder);
                    return(array);
                }
                else
                {
                    throw PythonOps.TypeErrorForTypeMismatch(Name, value);
                }

                return(null);
            }