initTakeOwnership

        pub fn initTakeOwnership(allocator: Allocator, cmd_line_utf8: []const u8) InitError!Self {
            const buffer = try allocator.alloc(u8, cmd_line_utf8.len + 1);
            errdefer allocator.free(buffer);

            return Self{
                .allocator = allocator,
                .cmd_line = cmd_line_utf8,
                .free_cmd_line_on_deinit = true,
                .buffer = buffer,
            };
        }