def get_face_ids(oEditor, body_name):
    """
    Get the face id list of a given body name.
    
    Parameters
    ----------
    oEditor : pywin32 COMObject
        The HFSS editor in which the operation will be performed.
    body_name : str
        Name of the body whose face id list will be returned
        
    Returns
    -------
    face_id_list : list of int
        list with face Id numbers of body_name
    """

    face_id_list = list(oEditor.GetFaceIDs(body_name))
    return map(int,face_id_list)