code: def value(self):
      return self._value
  
file_path: pyqtgraph/pyqtgraph/parametertree/parameterTypes/file.py
imports: import os
  import re
  from ...Qt import QtCore, QtGui, QtWidgets
  from ..Parameter import Parameter
  from .str import StrParameterItem
label_desc: Use image node_id 5 for calling the FileParameterItem obj's underlying member method code with example usage: obj.value() and returns: self