var schema = await GraphQlGenerator.RetrieveSchema(url);
var generator = new GraphQlGenerator();
var generatedClasses = generator.Generate(schema);

var schema = await GraphQlGenerator.RetrieveSchema(url);
var csharpCode = new GraphQlGenerator().GenerateFullClientCSharpFile(schema, "MyGqlApiClient");
await File.WriteAllTextAsync("MyGqlApiClient.cs", csharpCode);

var builder =
  new QueryQueryBuilder()
    .WithMe(
      new MeQueryBuilder()
        .WithAllScalarFields()
        .WithHome(
          new HomeQueryBuilder()
            .WithAllScalarFields()
            .WithSubscription(
              new SubscriptionQueryBuilder()
                .WithStatus()
                .WithValidFrom())
            .WithSignupStatus(
              new SignupStatusQueryBuilder().WithAllFields())
            .WithDisaggregation(
              new DisaggregationQueryBuilder().WithAllFields()),
          "b420001d-189b-44c0-a3d5-d62452bfdd42")
        .WithEnergyStatements ("2016-06", "2016-10"));

var query = builder.Build(Formatting.Indented);

var mutation =
  new MutationQueryBuilder()
    .WithUpdateHome(
      new HomeQueryBuilder().WithAllScalarFields(),
      new UpdateHomeInput { HomeId = Guid.Empty, AppNickname = "My nickname", Type = HomeType.House, NumberOfResidents = 4, Size = 160, AppAvatar = HomeAvatar.Floorhouse1, PrimaryHeatingSource = HeatingSource.Electricity }
    )
    .Build(Formatting.Indented, 2);

new ViewerQueryBuilder()
  .WithHomes(
    new HomeQueryBuilder()
      .WithAllScalarFields()
      .ExceptPrimaryHeatingSource()
      .ExceptMainFuseSize()
  )
  .Build(Formatting.Indented);

new ViewerQueryBuilder("MyQuery")
  .WithHome(
    new HomeQueryBuilder()
      .WithType()
      .WithSize()
      .WithAddress(new AddressQueryBuilder().WithAddress1("primaryAddressText").WithCountry(), "primaryAddress"),
    Guid.NewGuid(),
    "primaryHome")
  .WithHome(
    new HomeQueryBuilder()
      .WithType()
      .WithSize()
      .WithAddress(new AddressQueryBuilder().WithAddress1("secondaryAddressText").WithCountry(), "secondaryAddress"),
    Guid.NewGuid(),
    "secondaryHome")
  .Build(Formatting.Indented);

var homeIdParameter = new GraphQlQueryParameter<Guid>("homeId", "ID", homeId);

var builder =
  new TibberQueryBuilder()
    .WithViewer(
      new ViewerQueryBuilder()
        .WithHome(new HomeQueryBuilder().WithAllScalarFields(), homeIdParameter)
    )
    .WithParameter(homeIdParameter);

var includeDirectParameter = new GraphQlQueryParameter<bool>("direct", "Boolean", true);
var includeDirective = new IncludeDirective(includeDirectParameter);
var skipDirective = new SkipDirective(true);

var builder =
  new TibberQueryBuilder()
    .WithViewer(
       new ViewerQueryBuilder()
         .WithName(include: includeDirective)
         .WithAccountType(skip: skipDirective)
         .WithHomes(new HomeQueryBuilder().WithId(), skip: skipDirective)
    )
    .WithParameter(includeDirectParameter);

var builder =
  new RootQueryBuilder("InlineFragments")
    .WithUnion(
      new UnionTypeQueryBuilder()
        .WithTypeName()
        .WithConcreteType1Fragment(new ConcreteType1QueryBuilder().WithAllFields())
        .WithConcreteType2Fragment(new ConcreteType2QueryBuilder().WithAllFields())
        .WithConcreteType3Fragment(
          new ConcreteType3QueryBuilder()
            .WithTypeName()
            .WithName()
            .WithConcreteType3Field("alias")
            .WithFunction("my value", "myResult1")
        )
    )
    .WithInterface(
      new NamedTypeQueryBuilder()
        .WithName()
        .WithConcreteType3Fragment(
          new ConcreteType3QueryBuilder()
            .WithTypeName()
            .WithName()
            .WithConcreteType3Field()
            .WithFunction("my value")
        ),
      Guid.Empty
    );

var configuration = new GraphQlGeneratorConfiguration();
configuration.ScalarFieldTypeMappingProvider = new MyCustomScalarFieldTypeMappingProvider();

public class MyCustomScalarFieldTypeMappingProvider : IScalarFieldTypeMappingProvider
{
    public ScalarFieldTypeDescription GetCustomScalarFieldType(GraphQlGeneratorConfiguration configuration, GraphQlType baseType, GraphQlTypeBase valueType, string valueName)
    {
        valueType = valueType is GraphQlFieldType fieldType ? fieldType.UnwrapIfNonNull() : valueType;

        // DateTime and Byte
        switch (valueType.Name)
        {
            case "Byte": return new ScalarFieldTypeDescription { NetTypeName = "byte?", FormatMask = null };
            case "DateTime": return new ScalarFieldTypeDescription { NetTypeName = "DateTime?", FormatMask = null };
        }

        // fallback - not needed if all fields and arguments are resolved or the expected type is of "object" type
        return DefaultScalarFieldTypeMappingProvider.GetFallbackFieldType(configuration, valueType);
    }
}

public class OrderType
{
    public DateTime? CreatedDateTimeUtc { get; set; }
    public byte? SomeSmallNumber { get; set; }
}

public class OrderType
{
    public object CreatedDateTimeUtc { get; set; }
    public object SomeSmallNumber { get; set; }
}