name VS filename in imported .OBJ files

Hi All!

I've encountered very unity-specific problem (never seen this in 3D packages). While importing OBJ files to unity, by coping them to the assets folder for example, i am getting hierarchy of objects in my project view, like this

FileName (real filename of the imported OBJ) ---Name

The question is how do i find the "Name" if i do have "FileName" inside variable in my (editor) script, this 2 names may be completely different, in my example is

MyTest_Object ---Plane

How i can get child GameObject, "Plane" in my case, while i do have parent GameObject, "MyTest_Object" in my case inside another variable?

Thanks in advance for any help!

string GetName(GameObject go)
{
    foreach (Transform in go.transform)
        return t.name;
    Debug.LogError("Child object not found");
    return null;
}