How to perform a synchronous HTTP request and get the result in TMS WEB Core

WEB TMS WEB Core
9

Updated code:

Unit1.pas

uses JS;

TMyObject1 = class(TObject)  
  [async]  
  function ThisMethodIsAsync: Boolean;  
end; 

function ThisMethodIsAsync: Boolean; 
var FWebHttpRequest : TWebHttpRequest;
    LRes: String;
begin
   FWebHttpRequest := TWebHttpRequest.Create(nil);
   FWebHttpRequest.URL := 'https://api.example.com/data';
   FWebHttpRequest.Headers.AddPair('Content-Type', 'text'); 
   LRes := await(string, FWebHttpRequest.Perform);
   Result := LRes <> '';
end;



Unit2.pas

TMyObject2 = class(TObject)  
  procedure CallAsyncFunction;  
end; 

procedure CallAsyncFunction;
var LRes1: Boolean;
begin
    LRes1 := (TMyObject1.ThisMethodIsAsync());
end;

As you can see, CallAsyncFunction is not async anymore.

Now I'm getting this error:

[Error] Unit2.pas: Incompatible types: got "TJSPromise" expected "Boolean"

Which makes no sense at all.