parameters: (self, booster)
docstring: add a booster to CVBooster
docstring_summary: add a booster to CVBooster
docstring_tokens: add a booster to CVBooster
function: def append(self, booster):
          """add a booster to CVBooster"""
          self.boosters.append(booster)
function_tokens: def append ( self , booster ) : self . boosters . append ( booster )