def add_sequence_repeat(self, name, nrep, input_name, output_name):
        """
        Add sequence repeat layer to the model.

        Parameters
        ----------
        name: str
            The name of this layer.
        nrep: int
            Number of repetitions of the input blob along the sequence axis.
        input_name: str
            The input blob name of this layer.
        output_name: str
            The output blob name of this layer.

        See Also
        --------
        add_upsample, add_elementwise
        """
        spec = self.spec
        nn_spec = self.nn_spec
        spec_layer = nn_spec.layers.add()
        spec_layer.name = name
        spec_layer.input.append(input_name)
        spec_layer.output.append(output_name)
        spec_layer_params = spec_layer.sequenceRepeat
        spec_layer_params.nRepetitions = nrep