class_docstr: Extends QTableWidget with some useful functions for automatic data handling
  and copy / export context menu. Can automatically format and display a variety
  of data types (see :func:`setData() <pyqtgraph.TableWidget.setData>` for more
  information.
code: def save(self, data):
      fileName, _ = QtWidgets.QFileDialog.getSaveFileName(
          self,
          f"{translate('TableWidget', 'Save As')}...",
          "",
          f"{translate('TableWidget', 'Tab-separated values')} (*.tsv)",
      )
      if not fileName:
          return
      with open(fileName, "w") as fd:
          fd.write(data)
  
imports: import numpy
  from ..Qt import QtCore, QtGui, QtWidgets
label_desc: Use image node_id 21 for calling the TableWidget obj's underlying member method code with example usage: obj.save(data) without return types