def merge_codegen_params(reload_list, arg_list):
    """Merge the codegen reload params list additional arguments list with no duplicates"""

    if reload_list:
        new_reload_list = reload_list
    else:
        new_reload_list = []

    if arg_list:
        new_arg_list = arg_list
    else:
        new_arg_list = []

    # Combine the reload and new argument list without duplicates
    combined_args_list = list(set(new_reload_list).union(set(new_arg_list)))

    return combined_args_list