import '@sisyphus.js/runtime/lib/google/protobuf/descriptor';
/**
 *  An indicator of the behavior of a given field (for example, that a field
 *  is required in requests, or given as output but ignored as input).
 *  This **does not** change the behavior in protocol buffers itself; it only
 *  denotes the behavior and may affect how API tooling handles the field.
 *
 *  Note: This enum **may** receive new values in the future.
 */
export declare enum FieldBehavior {
    /**  Conventional default for enums. Do not use this. */
    FIELD_BEHAVIOR_UNSPECIFIED = 0,
    /**
     *  Specifically denotes a field as optional.
     *  While all fields in protocol buffers are optional, this may be specified
     *  for emphasis if appropriate.
     */
    OPTIONAL = 1,
    /**
     *  Denotes a field as required.
     *  This indicates that the field **must** be provided as part of the request,
     *  and failure to do so will cause an error (usually `INVALID_ARGUMENT`).
     */
    REQUIRED = 2,
    /**
     *  Denotes a field as output only.
     *  This indicates that the field is provided in responses, but including the
     *  field in a request does nothing (the server *must* ignore it and
     *  *must not* throw an error as a result of the field's presence).
     */
    OUTPUT_ONLY = 3,
    /**
     *  Denotes a field as input only.
     *  This indicates that the field is provided in requests, and the
     *  corresponding field is not included in output.
     */
    INPUT_ONLY = 4,
    /**
     *  Denotes a field as immutable.
     *  This indicates that the field may be set once in a request to create a
     *  resource, but may not be changed thereafter.
     */
    IMMUTABLE = 5,
    /**
     *  Denotes that a (repeated) field is an unordered list.
     *  This indicates that the service may provide the elements of the list
     *  in any arbitrary  order, rather than the order the user originally
     *  provided. Additionally, the list's order may or may not be stable.
     */
    UNORDERED_LIST = 6,
    /**
     *  Denotes that this field returns a non-empty default value if not set.
     *  This indicates that if the user provides the empty value in a request,
     *  a non-empty value will be returned. The user will not be aware of what
     *  non-empty value to expect.
     */
    NON_EMPTY_DEFAULT = 7
}
export declare namespace FieldBehavior {
    const name = "google.api.FieldBehavior";
}
declare module '@sisyphus.js/runtime/lib/google/protobuf/descriptor' {
    interface FieldOptions {
        /**
         *  A designation of a specific field behavior (required, output only, etc.)
         *  in protobuf messages.
         *
         *  Examples:
         *
         *    string name = 1 [(google.api.field_behavior) = REQUIRED];
         *    State state = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
         *    google.protobuf.Duration ttl = 1
         *      [(google.api.field_behavior) = INPUT_ONLY];
         *    google.protobuf.Timestamp expire_time = 1
         *      [(google.api.field_behavior) = OUTPUT_ONLY,
         *       (google.api.field_behavior) = IMMUTABLE];
         */
        fieldBehavior: FieldBehavior | (keyof typeof FieldBehavior)[];
    }
}
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