public static ServiceDescriptorBuilder ApplyEmailSenderDefaults(this ServiceDescriptorBuilder builder, string?prefix) => builder .SetPath(prefix ?? "i_email_sender") .SetDefaultInputType(InputType.Json(EmailSenderJsonOptions.Default)) .SetDefaultOutputType(OutputType.Json(EmailSenderJsonOptions.Default)) .SetDefaultErrorType(ErrorType.Json(EmailSenderJsonOptions.Default)) .SetNamingPolicy(NamingConvention.SnakeCase);