class_docstr: Provides dock-dropping methods
code: def __init__(self, dndWidget):
      self.dndWidget = dndWidget
      self.allowedAreas = {"center", "right", "left", "top", "bottom"}
      self.dndWidget.setAcceptDrops(True)
      self.dropArea = None
      self.overlay = DropAreaOverlay(dndWidget)
      self.overlay.raise_()
  
file_path: pyqtgraph/pyqtgraph/dockarea/DockDrop.py
imports: from ..Qt import QtCore, QtGui, QtWidgets
label_desc: Use image node_id 1 to create a new DockDrop object  with example: obj = DockDrop(dndWidget)