class_docstr: Provides dock-dropping methods
code: def removeAllowedArea(self, area):
      self.allowedAreas.discard(area)
  
file_path: pyqtgraph/pyqtgraph/dockarea/DockDrop.py
imports: from ..Qt import QtCore, QtGui, QtWidgets
label_desc: Use image node_id 3 for calling the DockDrop obj's underlying member method code with example usage: obj.removeAllowedArea(area) without return types