code: def get_line(self, axes):
      raise RuntimeError(
          "get_line method should be defined by the derived class"
      )
  
imports: import numpy
  import matplotlib
  from matplotlib import _api
  import matplotlib.axes
  from matplotlib.path import Path
  from mpl_toolkits.axes_grid1 import mpl_axes
  from .axisline_style import AxislineStyle
  from .axis_artist import AxisArtist, GridlinesCollection
label_desc: Use image node_id 3 for calling the _FloatingAxisArtistHelperBase obj's underlying member method code with example usage: obj.get_line(axes) without return types