public async Task GenerateModel()
{
// arrange
var sb = new StringBuilder();
var writer = new CodeWriter(sb);
var generator = new InputModelGenerator();
var descriptor = new InputModelDescriptor(
"Test",
"Demo",
new[] { new InputFieldDescriptor("Foo", "Bar") });
// act
await generator.WriteAsync(writer, descriptor);
// assert
sb.ToString().MatchSnapshot();
}