class_docstr: Base class for vertices.
  
  **Attributes**
      e (list[Edge]): list of edges associated with this vertex.
docstr: returns the Edge from vertex v directed toward this vertex.
code: def e_from(self, x):
      """
      returns the Edge from vertex v directed toward this vertex.
      """
      for e in self.e_in():
          if e.v[0] == x:
              return e
      return None
  
file_path: pygraphistry/graphistry/layout/graph/vertexBase.py
label_desc: Use image node_id 8 for calling the VertexBase obj's underlying member method code with example usage: obj.e_from(x) and returns: None, e