class_docstr: Labelled arrow for use as a quiver plot scale key.
class_docstr_tok: ["Labelled","arrow","for","use","as","a","quiver","plot","scale","key","."]
code: def contains(self, mouseevent):
      # Maybe the dictionary should allow one to
      # distinguish between a text hit and a vector hit.
      if (
          self.text.contains(mouseevent)[0]
          or self.vector.contains(mouseevent)[0]
      ):
          return True, {}
      return False, {}
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  import math
  import weakref
  import numpy
  from numpy import ma
  import matplotlib.collections
  import matplotlib.transforms
  import matplotlib.text
  import matplotlib.artist
  from matplotlib.artist import allow_rasterization
  from matplotlib import docstring
  import matplotlib.font_manager
  from matplotlib.cbook import delete_masked_points
  from matplotlib.patches import CirclePolygon
label_desc: Use image node_id 9 for calling the QuiverKey obj's underlying member method code with example usage: obj.contains(mouseevent) and returns: False,  dict, True,  dict