code: def __init__(self, x1=0, y1=0, x2=0, y2=0):
      self.x1 = x2
      self.y1 = y2
      self.x2 = x2
      self.y2 = y2
  
file_path: vispy/vispy/util/svg/shapes.py
label_desc: Use image node_id 1 to create a new Line object from inherited base classes: object with example: obj = Line(x1, y1, x2, y2)