code: def dot_edge(src, dst, label, color):
      return pydot.Edge(
          src=quoted(src),
          dst=quoted(dst),
          label=quoted(label),
          color=color,
      )
  
file_path: baikal/baikal/plot.py
imports: import io
  import os
  from typing import Optional
  from baikal import Model
  from baikal._core.utils import make_name, safezip2
label_desc: Use image node_id 6 for calling a global function with example usage: dot_edge(src, dst, label, color) and returns: pydot