docstr: This method will be called before the minimum period of all
  datas/indicators have been meet for the strategy to start executing
docstr_tok: ["This","method","will","be","called","before","the","minimum","period","of","all","datas\/indicators","have","been","meet","for","the","strategy","to","start","executing"]
code: def prenext(self):
      """
      This method will be called before the minimum period of all
      datas/indicators have been meet for the strategy to start executing
      """
      pass
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import collections
  import operator
  import sys
  from .utils.py3 import map, range, zip, with_metaclass, string_types
  from .utils import DotDict
  from .lineroot import LineRoot, LineSingle
  from .linebuffer import LineActions, LineNum
  from .lineseries import LineSeries, LineSeriesMaker
  from .dataseries import DataSeries
  from .None import metabase
label_desc: Use image node_id 15 for calling the LineIterator obj's underlying member method code with example usage: obj.prenext() without return types