new_contents: """
  Example: Svg generation
  """
  from math import radians
  from svgwrite import Drawing
  from Tree.core import Tree
  from Tree.draw import SvgDrawer
  
  if __name__ == "__main__":
      tree = Tree(
          pos=(0, 0, 0, -300),
          complexity=3,
          angle=(radians(25), 0),
          sigma=(0.1, 0.2)
      )
  
      tree.grow(10)
  
      # Move the tree in the right position
      rec = tree.get_rectangle()
      tree.move((-rec[0], -rec[1]))
  
      # Create, draw and show the image/tree
      svg = Drawing(filename="mycoolsvg.svg", size=tree.get_size())
      SvgDrawer(tree, svg, color=(123, 60, 4)+(30, 78, 90), thickness=10).draw()
      svg.save()
subject: add example