class_docstr: Convenience class used for laying out QWidgets in a grid.
  (It's just a little less effort to use than QGridLayout)
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docstr: Create an empty LayoutWidget and place it in the next available cell (or in the cell specified)
  All extra keyword arguments are passed to :func:`LayoutWidget.__init__ <pyqtgraph.LayoutWidget.__init__>`
  Returns the created widget.
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code: def addLayout(
      self, row=None, col=None, rowspan=1, colspan=1, **kargs
  ):
      """
      Create an empty LayoutWidget and place it in the next available cell (or in the cell specified)
      All extra keyword arguments are passed to :func:`LayoutWidget.__init__ <pyqtgraph.LayoutWidget.__init__>`
      Returns the created widget.
      """
      layout = LayoutWidget(**kargs)
      self.addWidget(layout, row, col, rowspan, colspan)
      return layout
  
file_path: pyqtgraph/pyqtgraph/widgets/LayoutWidget.py
imports: from ..Qt import QtWidgets
label_desc: Use image node_id 6 for calling the LayoutWidget obj's underlying member method code with example usage: obj.addLayout(row, col, rowspan, colspan) and returns: layout