def convert(self, vroot, entry_variables):
        """Convert a given graph.

        Convert a given graph using the `converters` in the order of the registeration, i.e., sequentially.

        Args:
            vroot (:obj:`Variable`): NNabla Variable
            entry_variables (:obj:`Variable`): Entry variable from which the conversion starts.
        """

        for converter in self.converters:
            vroot = converter.convert(vroot, entry_variables)
        return vroot
Convert a given graph.

        Convert a given graph using the `converters` in the order of the registeration, i.e., sequentially.

        Args:
            vroot (:obj:`Variable`): NNabla Variable
            entry_variables (:obj:`Variable`): Entry variable from which the conversion starts.