code: def get_dasharray(obj):
      """Get an SVG dash array for the given matplotlib linestyle
  
      Parameters
      ----------
      obj : matplotlib object
          The matplotlib line or path object, which must have a get_linestyle()
          method which returns a valid matplotlib line code
  
      Returns
      -------
      dasharray : string
          The HTML/SVG dasharray code associated with the object.
      """
      if obj.__dict__.get("_dashSeq", None) is not None:
          return ",".join(map(str, obj._dashSeq))
      else:
          ls = obj.get_linestyle()
          dasharray = LINESTYLES.get(ls, "not found")
          if dasharray == "not found":
              warnings.warn(
                  "line style '{0}' not understood: "
                  "defaulting to solid line.".format(ls)
              )
              dasharray = LINESTYLES["solid"]
          return dasharray
  
imports: import itertools
  import io
  import base64
  import numpy
  import warnings
  import matplotlib
  from matplotlib.colors import colorConverter
  from matplotlib.path import Path
  from matplotlib.markers import MarkerStyle
  from matplotlib.transforms import Affine2D
  from matplotlib import ticker
label_desc: Use image node_id 3 for calling a global function with example usage: get_dasharray(obj) and returns: str, dasharray