class_docstr: Provides dock-dropping methods
code: def dragLeaveEvent(self, ev):
      self.dropArea = None
      self.overlay.setDropArea(self.dropArea)
  
file_path: pyqtgraph/pyqtgraph/dockarea/DockDrop.py
imports: from ..Qt import QtCore, QtGui, QtWidgets
label_desc: Use image node_id 8 for calling the DockDrop obj's underlying member method code with example usage: obj.dragLeaveEvent(ev) without return types