class_docstr: Base class for vertices.
  
  **Attributes**
      e (list[Edge]): list of edges associated with this vertex.
docstr: return the Edge with both this vertex and vertex v
code: def e_with(self, v):
      """
      return the Edge with both this vertex and vertex v
      """
      for e in self.e:
          if v in e.v:
              return e
      return None
  
file_path: pygraphistry/graphistry/layout/graph/vertexBase.py
label_desc: Use image node_id 9 for calling the VertexBase obj's underlying member method code with example usage: obj.e_with(v) and returns: None, e