class_docstr: Instances of this class are delivered to items in a :class:`GraphicsScene <pyqtgraph.GraphicsScene>` via their mouseDragEvent() method when the item is being mouse-dragged. 
code: def __repr__(self):
      if self.currentItem is None:
          lp = self._lastScenePos
          p = self._scenePos
      else:
          lp = self.lastPos()
          p = self.pos()
      return (
          "<MouseDragEvent (%g,%g)->(%g,%g) buttons=%s start=%s finish=%s>"
          % (
              lp.x(),
              lp.y(),
              p.x(),
              p.y(),
              str(self.buttons()),
              str(self.isStart()),
              str(self.isFinish()),
          )
      )
  
imports: import weakref
  from time import perf_counter
  from ..Point import Point
  from ..Qt import QtCore
label_desc: Use image node_id 18 for calling the MouseDragEvent obj's underlying member method code with example usage: obj.__repr__() and returns: unknown