public class MyType
{
  private readonly ILogger<MyType> _logger;

  public MyType(ILoggerFactory loggerFactory)
  {
    _logger = loggerFactory.CreateLogger<MyType>();
  }
}

public class MyType
{
  private readonly ILogger<MyType> _logger;

  public MyType(ILoggerFactory loggerFactory)
  {
    _logger = loggerFactory.CreateLogger<MyType>();
  }
}

var avg = group.Average(v => v.Value);

var avg = group.Average(v => v.Value);

var expr = new ExpressionBuilder();
expr.AppendVerbatim("var propertyValue = (");
expr.AppendType(field.Type);
expr.AppendVerbatim(")valueType?.GetValue(");
//And so on

var expr = new ExpressionBuilder();
expr.AppendVerbatim("var propertyValue = (");
expr.AppendType(field.Type);
expr.AppendVerbatim(")valueType?.GetValue(");
//And so on

if (typeof(IEnumerable).IsAssignableFrom(prop.Type.ToType()))
            {
                var genericTypes = prop.Type.ToType().GetInterfaces().FirstOrDefault(t =>
                    t.IsGenericType && t.GetGenericTypeDefinition() == typeof(IEnumerable<>));
                if (genericTypes == null)
                    continue;

                var innerGenericType = genericTypes.GetGenericArguments()[0];

if (typeof(IEnumerable).IsAssignableFrom(prop.Type.ToType()))
            {
                var genericTypes = prop.Type.ToType().GetInterfaces().FirstOrDefault(t =>
                    t.IsGenericType && t.GetGenericTypeDefinition() == typeof(IEnumerable<>));
                if (genericTypes == null)
                    continue;

                var innerGenericType = genericTypes.GetGenericArguments()[0];

[Template]
private void DoSomething<[CompileTime]TMyType>(IMethod myMethod)
{
  var thisIsMyMethod = (TMyType) myMethod.Invoke()
  //Use it as though it's cast as a TMyType now
  //...
}

[Template]
private void DoSomething<[CompileTime]TMyType>(IMethod myMethod)
{
  var thisIsMyMethod = (TMyType) myMethod.Invoke()
  //Use it as though it's cast as a TMyType now
  //...
}

[Template]
internal void RebuildNotificationAsyncCallback(
  IIntroductionAdviceResult<IFIeld> adviceField
)
{
  //I can get the type of the field off the type declaration itself...
  var fieldType = adviceField.Declaration.Type; //...but then I cannot then use this with an 'as' or 'is' nor can I cast with a (fieldType)whatever.Value;
  //So when I then get my value for it, it's stuck cast as a `dynamic?` and it's unclear how to proceed
  var myField = adviceField.Declaration.Value; //Type = dynamic?
}

[Template]
internal void RebuildNotificationAsyncCallback(
  IIntroductionAdviceResult<IFIeld> adviceField
)
{
  //I can get the type of the field off the type declaration itself...
  var fieldType = adviceField.Declaration.Type; //...but then I cannot then use this with an 'as' or 'is' nor can I cast with a (fieldType)whatever.Value;
  //So when I then get my value for it, it's stuck cast as a `dynamic?` and it's unclear how to proceed
  var myField = adviceField.Declaration.Value; //Type = dynamic?
}