class_docstr: Base Class for series
docstr: The starting point of the series. This point is included
docstr_tok: ["The","starting","point","of","the","series",".","This","point","is","included"]
code: def start(self):
      """The starting point of the series. This point is included"""
      raise NotImplementedError("(%s).start" % self)
  
file_path: sympy/sympy/series/series_class.py
imports: from sympy.core.expr import Expr
  from sympy.core.singleton import S
  from sympy.core.cache import cacheit
label_desc: Use image node_id 2 for calling the SeriesBase obj's underlying member method code with example usage: obj.start() without return types