Get FamilyInstance in FamilyDocument from project

Actually, I finally managed to get these FamilyInstances (without the shared option in the nested families).

Here is the code :

import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *
clr.AddReference("RevitAPI")
import Autodesk
from Autodesk.Revit.DB import *
import System
import sys

doc = IN[0]
category = IN[1]

filter = ElementCategoryFilter(System.Enum.ToObject(BuiltInCategory, category.Id))
result = FilteredElementCollector(doc).WherePasses(filter).WhereElementIsNotElementType().ToElements()

OUT = result

I didn’t think it was possible to use the Get All Elements From Linked Model node from archi-lab for familyDocument.

Thanks for your help.