class_docstr: GraphicsItem filling the space between two PlotDataItems.
docstr: Change the fill brush. Acceps the same arguments as pg.mkBrush()
code: def setBrush(self, *args, **kwds):
      """Change the fill brush. Acceps the same arguments as pg.mkBrush()"""
      QtWidgets.QGraphicsPathItem.setBrush(
          self, fn.mkBrush(*args, **kwds)
      )
  
file_path: pyqtgraph/pyqtgraph/graphicsItems/FillBetweenItem.py
imports: from ..None import functions
  from ..Qt import QtGui, QtWidgets
  from .PlotCurveItem import PlotCurveItem
  from .PlotDataItem import PlotDataItem
label_desc: Use image node_id 2 for calling the FillBetweenItem obj's underlying member method code with example usage: obj.setBrush() without return types