def METHOD_NAME(self):
    try:
        import pymultinest
        from pymultinest.analyse import Analyzer
    except:
        print(
            "Warning : MultiNest/pymultinest not properly installed (results might be unexpected). \
                You can get it from : https://johannesbuchner.github.io/PyMultiNest/pymultinest.html"
        )
        self._pymultinest_installed = False
    else:
        self._pymultinest_installed = True
        self._pymultinest = pymultinest
        self._Analyzer = Analyzer