class_docstr: A plugin to highlight lines on hover
code: def __init__(self, lines):
      self.lines = lines
      self.dict_ = {
          "type": "linehighlight",
          "line_ids": [utils.get_id(line) for line in lines],
          "alpha_bg": lines[0].get_alpha(),
          "alpha_fg": 1.0,
      }
  
file_path: mpld3/examples/random_walk.py
imports: import jinja2
  import json
  import numpy
  import matplotlib.pyplot
  import mpld3
  from mpld3 import plugins, utils
label_desc: Use image node_id 1 to create a new HighlightLines object from inherited base classes: plugins with example: obj = HighlightLines(lines)