@staticmethod
def _create(unit_def, kind, exponent, scale=0, multiplier=1.0):
    """ Create libsbml unit.

        :param unit_def:
        :param kind:
        :param exponent:
        :param scale:
        :param multiplier:
        :return:
        """
    unit = unit_def.createUnit()
    unit.setKind(kind)
    unit.setExponent(exponent)
    unit.setScale(scale)
    unit.setMultiplier(multiplier)
    return unit
