/// Returns a new [{{{classname}}}] instance.
  {{{classname}}}({
  {{#vars}}
    {{!
        A field is required in Dart when it is
        required && !defaultValue in OAS
    }}
    {{^isNullable}}{{#required}}{{^defaultValue}}required {{/defaultValue}}{{/required}}{{/isNullable}}this.{{{name}}}{{#isNullable}} = const None(){{/isNullable}}{{^isNullable}}{{#defaultValue}} = {{#isEnum}}{{^isContainer}}const {{{enumName}}}._({{/isContainer}}{{/isEnum}}{{{.}}}{{#isEnum}}{{^isContainer}}){{/isContainer}}{{/isEnum}}{{/defaultValue}}{{/isNullable}},
  {{/vars}}
  });