def METHOD_NAME(self):
    vlayout = QVBoxLayout()
    vlayout.setSpacing(0)
    vlayout.setContentsMargins(0, 0, 0, 0)
    self._top_level_function_level = QLabel()
    self._reset_function_label()
    hlayout = QHBoxLayout()
    hlayout.addWidget(self._top_level_function_level)
    hlayout.setContentsMargins(3, 3, 3, 3)
    vlayout.addLayout(hlayout)
    self._tree = QTreeView(self)
    self._model = CallTreeModel(self._tree)
    self._tree.setModel(self._model)
    self._tree.setFont(QFont(Conf.disasm_font))
    header = self._tree.header()
    header.setSectionResizeMode(QHeaderView.ResizeToContents)
    self._tree.expanded.connect(self._on_item_expanded)
    self._tree.clicked.connect(self._on_item_clicked)
    self._tree.doubleClicked.connect(self._on_item_double_clicked)
    vlayout.addWidget(self._tree)
    self.setLayout(vlayout)