IApplicationBuilder does not contain a definition for UseIdentity

Documentation says that as of ASP.NET Core 2.2, UseIdentity is now obsolete and that UseAuthentication should be used instead

This method is obsolete and will be removed in a future version. The recommended alternative is UseAuthentication(IApplicationBuilder)

https://docs.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.builder.builderextensions.useidentity?view=aspnetcore-2.2