class_docstr: Base class for a vertex.
class_docstr_tok: ["Base","class","for","a","vertex","."]
docstr: Returns the star domain ``st(v)`` of the vertex.
  
  Parameters
  ----------
  v :
      The vertex ``v`` in ``st(v)``
  
  Returns
  -------
  st : set
      A set containing all the vertices in ``st(v)``
docstr_tok: ["Returns","the","star","domain","``","st","(","v",")","``","of","the","vertex",".","Parameters","--","--","--","--","--","v",":","The","vertex","``","v","``","in","``","st","(","v",")","``","Returns","--","--","--","-","st",":","set","A","set","containing","all","the","vertices","in","``","st","(","v",")","``"]
code: def star(self):
      """Returns the star domain ``st(v)`` of the vertex.
  
      Parameters
      ----------
      v :
          The vertex ``v`` in ``st(v)``
  
      Returns
      -------
      st : set
          A set containing all the vertices in ``st(v)``
      """
      self.st = self.nn
      self.st.add(self)
      return self.st
  
imports: import collections
  from abc import ABC, abstractmethod
  import numpy
  from scipy._lib._util import MapWrapper
label_desc: Use image node_id 6 for calling the VertexBase obj's underlying member method code with example usage: obj.star() and returns: self