def _call_to_base_type(self, value):
methods = self._find_methods('<STR_LIT>', '<STR_LIT>')<EOL>call = self._apply_list(methods)<EOL>return call(value)<EOL>
Call all _validate() and _to_base_type() methods on the value.

        This calls the methods in the method resolution order of the
        property's class.