def __init__(self, linter=None):
        """checker instances should have the linter as argument

        :param ILinter linter: is an object implementing ILinter."""
        if self.name is not None:
            self.name = self.name.lower()
        OptionsProviderMixIn.__init__(self)
        self.linter = linter
def __init__ ( self , linter = None ) : if self . name is not None : self . name = self . name . lower ( ) OptionsProviderMixIn . __init__ ( self ) self . linter = linter
checker instances should have the linter as argument

        :param ILinter linter: is an object implementing ILinter.