class_docstr: Generates a dot description of a graph in dictionary form.
code: def visit_all(self, graph, nodename_prefix=""):
      for i in graph:
          self.visit(graph, graph[i], nodename_prefix)
      return self
  
file_path: coremltools/coremltools/converters/mil/frontend/tensorflow/dot_visitor.py
imports: from coremltools.converters.mil.mil import types
label_desc: Use image node_id 5 for calling the DotVisitor obj's underlying member method code with example usage: obj.visit_all(graph, nodename_prefix) and returns: self