original_docstring: 
          This is invoked when a vertex is encountered for the first time.
          Together we report the discover time of vertex `v`.
          
docstring: This is invoked when a vertex is encountered for the first time.
  Together we report the discover time of vertex `v`.
docstring_tokens: This is invoked when a vertex is encountered for the first time . Together we report the discover time of vertex ` v ` .
code: def discover_vertex(self, v, t):
          """
          This is invoked when a vertex is encountered for the first time.
          Together we report the discover time of vertex `v`.
          """
          return
code_tokens: def discover_vertex ( self , v , t ) : return
short_docstring: This is invoked when a vertex is encountered for the first time.
short_docstring_tokens: This is invoked when a vertex is encountered for the first time .
comment: """
          This is invoked when a vertex is encountered for the first time.
          Together we report the discover time of vertex `v`.
          """