[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-28 UTC."],[[["\u003cp\u003e\u003ccode\u003eFieldInfoExtensions\u003c/code\u003e is a static class that serves as a holder for extension identifiers originating from the \u003ccode\u003egoogle/api/field_info.proto\u003c/code\u003e file.\u003c/p\u003e\n"],["\u003cp\u003eThe class \u003ccode\u003eFieldInfoExtensions\u003c/code\u003e inherits from the \u003ccode\u003eobject\u003c/code\u003e class and includes inherited members such as \u003ccode\u003eEquals\u003c/code\u003e, \u003ccode\u003eGetHashCode\u003c/code\u003e, and \u003ccode\u003eToString\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eFieldInfo\u003c/code\u003e field is a rich semantic descriptor for API fields, providing additional information beyond basic typing, with examples showing its use for specifying formats like \u003ccode\u003eUUID4\u003c/code\u003e, \u003ccode\u003eIPV4\u003c/code\u003e, and \u003ccode\u003eIPV6\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version of the \u003ccode\u003eFieldInfoExtensions\u003c/code\u003e is 2.15.0, with older versions 2.10.0 and 2.2.0 also available.\u003c/p\u003e\n"]]],[],null,["# Class FieldInfoExtensions (2.17.0)\n\nVersion latestkeyboard_arrow_down\n\n- [2.17.0 (latest)](/dotnet/docs/reference/Google.Api.CommonProtos/latest/Google.Api.FieldInfoExtensions)\n- [2.15.0](/dotnet/docs/reference/Google.Api.CommonProtos/2.15.0/Google.Api.FieldInfoExtensions)\n- [2.10.0](/dotnet/docs/reference/Google.Api.CommonProtos/2.10.0/Google.Api.FieldInfoExtensions)\n- [2.2.0](/dotnet/docs/reference/Google.Api.CommonProtos/2.2.0/Google.Api.FieldInfoExtensions) \n\n public static class FieldInfoExtensions\n\nHolder for extension identifiers generated from the top level of google/api/field_info.proto \n\nInheritance\n-----------\n\n[object](https://learn.microsoft.com/dotnet/api/system.object) \\\u003e FieldInfoExtensions \n\nInherited Members\n-----------------\n\n[object.Equals(object)](https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object)) \n[object.Equals(object, object)](https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object-system-object)) \n[object.GetHashCode()](https://learn.microsoft.com/dotnet/api/system.object.gethashcode) \n[object.GetType()](https://learn.microsoft.com/dotnet/api/system.object.gettype) \n[object.MemberwiseClone()](https://learn.microsoft.com/dotnet/api/system.object.memberwiseclone) \n[object.ReferenceEquals(object, object)](https://learn.microsoft.com/dotnet/api/system.object.referenceequals) \n[object.ToString()](https://learn.microsoft.com/dotnet/api/system.object.tostring)\n\nNamespace\n---------\n\n[Google.Api](/dotnet/docs/reference/Google.Api.CommonProtos/latest/Google.Api)\n\nAssembly\n--------\n\nGoogle.Api.CommonProtos.dll\n\nFields\n------\n\n### FieldInfo\n\n public static readonly Extension\u003cFieldOptions, FieldInfo\u003e FieldInfo\n\nRich semantic descriptor of an API field beyond the basic typing.\n\nExamples: \n\n string request_id = 1 [(google.api.field_info).format = UUID4];\n string old_ip_address = 2 [(google.api.field_info).format = IPV4];\n string new_ip_address = 3 [(google.api.field_info).format = IPV6];\n string actual_ip_address = 4 [\n (google.api.field_info).format = IPV4_OR_IPV6\n ];\n google.protobuf.Any generic_field = 5 [\n (google.api.field_info).referenced_types = {type_name: \"ActualType\"},\n (google.api.field_info).referenced_types = {type_name: \"OtherType\"},\n ];\n google.protobuf.Any generic_user_input = 5 [\n (google.api.field_info).referenced_types = {type_name: \"*\"},\n ];"]]
