Editor import fbx files

Questions & Answers
1

I want to use the editor to import a bunch of fbx files.
I don’t know how to proceed from the code below…

public class Importer : Editor
{
    [MenuItem("Custom/Import Step")]
    static void ImportStep()
    {
        string file_path = "files.csv";
        StreamReader inp_stm = new StreamReader(file_path);

        while (!inp_stm.EndOfStream)
        {
            string inp_ln = inp_stm.ReadLine();
            string[] a = inp_ln.Split(';');
            Debug.Log(a[0]);
            string tmp_string = "Assets/" + a[0] +".fbx";
            float x = float.Parse(a[1]);
            float y = float.Parse(a[2]);
            float z = float.Parse(a[3]);
            Debug.Log(tmp_string);
            
            //GameObject go = (GameObject)AssetDatabase.LoadAssetAtPath(tmp_string, typeof(GameObject));
            //AssetDatabase.LoadAssetAtPath(tmp_string, typeof(GameObject));

            //Instantiate(gos*);*

//go.name = “ast.1”;
//go.transform.position = new Vector3(x, y, z);
}
inp_stm.Close();
}
}

2

Yes, they already exist as fbx files, I want to instantiate them.
Also, I have a txt file with the parent/child relation between the fbx files and also the position the fbx files should have.
The fbx files comes from a 3D cad software, and I want to recreate my layout in Unity