// Original file: deps/googleapis/google/api/field_behavior.proto /** * 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 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, }