-record(op, {
    name :: binary(),
    description :: gleam@option:option(binary()),
    op_resolver :: mochi@query:internal_resolver(any()),
    result_encoder :: fun((any()) -> gleam@dynamic:dynamic_()),
    arg_definitions :: list(mochi@query:arg_def()),
    return_type :: mochi@schema:field_type(),
    guards :: list(fun((mochi@schema:execution_context()) -> {ok, nil} |
        {error, binary()})),
    kind :: any()
}).