@classmethod
def input_helper(cls, *args, **kwargs):
    """Validate if the keywords are valid Quantum ESPRESSO pw.x keywords, and also helps in preparing the input
        parameter dictionary in a 'standardized' form (e.g., converts ints to floats when required, or if the flag
        flat_mode is specified, puts the keywords in the right namelists).

        This function calls :py:func:`aiida_quantumespresso.calculations.helpers.pw_input_helper`,
        see its docstring for further information.
        """
    from . import helpers
    return helpers.pw_input_helper(*args, **kwargs)
