def METHOD_NAME(self):
    """Allows to connect input_string input to the operator.
    Ex: 'double:1.0', 'int:1',
    'vector<double>:1.0;1.0'
    Parameters
    ----------
    my_input_string : str
    Examples
    --------
    >>> from ansys.dpf import core as dpf
    >>> op = dpf.operators.utility.txt_file_to_dpf()
    >>> op.inputs.input_string.connect(my_input_string)
    >>> # or
    >>> op.inputs.input_string(my_input_string)
    """
    return self._input_string