Javascript 7.11 getting a bean

I am facing issue to instantiate a bean in the version 7.11 order to get data from the Documents module in order to attach a PDF an existing document to an email, via opening a drawer.

I might be missing something here. I am putting this issue here once I posted a similar one in the community forum and no one answered so far.

The function is triggered after a pressed button in the edit view of a custom module.

I have tried some different approachs as

Approach 1:
var document1;
//document1 = app.data.createBean("Documents", {id:document_id}); // same effect
document1 = SUGAR.App.data.createBean('Documents', {id:document_id});
var loaded_document;
document1.fetch();
console.log(document1.toJSON()); // got just the ID

APPROACH 2:

var document1 = app.data.createBean("Documents");
document1.fetch({
     filter:[{id:document_id}],
});
console.log(document1.toJSON()); // get none

APPROACH 3:

var loaded_document;
var document1 = SUGAR.App.data.createBean('Documents', {id:document_id});

var request = document1.fetch();

request.xhr.done(function () {
    console.log( "entered" );
    console.log( document1.get('name') ); //undefined
    loaded_document = document1; // loaded_document remains undefined
});

APPROACH 4:

document2 = SUGAR.App.data.createBean('Accounts', {'id': '9f77f918-22e0-70b7-a099-55d38d970d20'});
requestA = document2.fetch();
var datatest;
requestA.xhr.done({
        success: function(data){
        console.log("document2 in success --- ");
        console.log(data);
       loaded2 = document2;
       datatest = data;
    }
});

console.log(document2.toJSON());// just the ID

APPROACH 5:

With this approach, the result comes is called afterwards. How could I assure this runs in the right time, if this is the solution?

var loaded2,

url = app.api.buildURL('Documents/'+document_id);

self = this;

app.api.call('GET', url, null, {

     success: _.bind( function (data){
         console.log("data get");
         console.log(data);
         loaded2 = data; // after email drawer is charged, it is called
        document1 = SUGAR.App.data.createBean('Documents', data); // is this correct?
    }, this),

    error:_.bind(function(o){

         console.log("Error retrieving Document" + o);

    }, this),

}, {async: false}); // the async: false is essential in this case.

console.log(loaded2); // ok, but still not populating as expected

After this, in compose-email.js I am trying to send it as an attachment:

APPROACH 1:

I get the object and populate prepopulate:

prepopulate.attachments.push(document1);

APPROACH 2:

Trigger the document attachment event

this.context.trigger('email_attachments:document', loaded_document);

Could any of you advise in each case?

Thank you in advance