openapi-generator/modules/swagger-codegen/src/main/resources/csharp/enumClass.mustache

        /// <summary>
        /// {{^description}}Gets or Sets {{{name}}}{{/description}}{{#description}}{{{description}}}{{/description}}
        /// </summary>{{#description}}
        /// <value>{{{description}}}</value>{{/description}}
        [JsonConverter(typeof(StringEnumConverter))]
        public enum {{#datatypeWithEnum}}{{.}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{classname}}{{/datatypeWithEnum}}
        {
            {{#allowableValues}}{{#enumVars}}
            /// <summary>
            /// Enum {{name}} for {{{value}}}
            /// </summary>
            [EnumMember(Value = {{{value}}})]
            {{name}}{{^-last}},
            {{/-last}}{{#-last}}{{/-last}}{{/enumVars}}{{/allowableValues}}
        }