How to use the lightkurve.lightcurvefile.KeplerLightCurveFile function in lightkurve

def lc(self, value):
        # this enables `lc` to be either a string
        # or an object from KeplerLightCurveFile
        if isinstance(value, str):
            self._lc = KeplerLightCurveFile(value).PDCSAP_FLUX
        elif isinstance(value, KeplerLightCurveFile):
            self._lc = value.SAP_FLUX
        elif isinstance(value, KeplerLightCurve):
            self._lc = value
        else:
            raise ValueError("lc must be either a string, a KeplerLightCurve or a"
                             " KeplerLightCurveFile instance, got {}.".format(value))

def lc(self, value):
        # this enables `lc` to be either a string
        # or an object from KeplerLightCurveFile
        if isinstance(value, str):
            self._lc = KeplerLightCurveFile(value).PDCSAP_FLUX
        elif isinstance(value, KeplerLightCurveFile):
            self._lc = value.SAP_FLUX
        elif isinstance(value, KeplerLightCurve):
            self._lc = value
        else:
            raise ValueError("lc must be either a string, a KeplerLightCurve or a"
                             " KeplerLightCurveFile instance, got {}.".format(value))

def __init__(self, path, quality_bitmask='default', **kwargs):
        super(KeplerLightCurveFile, self).__init__(path, **kwargs)

        # check to make sure the correct filetype has been provided
        filetype = detect_filetype(self.header())
        if filetype == 'TessLightCurveFile':
            warnings.warn("A TESS data product is being opened using the "
                          "`KeplerLightCurveFile` class. "
                          "Please use `TessLightCurveFile` instead.",
                          LightkurveWarning)
        elif filetype is None:
            warnings.warn("Given fits file not recognized as Kepler or TESS "
                          "observation.", LightkurveWarning)
        elif "TargetPixelFile" in filetype:
            warnings.warn("A `TargetPixelFile` object is being opened as a "
                          "`KeplerLightCurveFile`. "
                          "Please use `KeplerTargetPixelFile` instead.",
                          LightkurveWarning)

def lc(self, value):
        # this enables `lc` to be either a string
        # or an object from KeplerLightCurveFile
        if isinstance(value, str):
            self._lc = KeplerLightCurveFile(value).PDCSAP_FLUX
        elif isinstance(value, KeplerLightCurveFile):
            self._lc = value.SAP_FLUX
        elif isinstance(value, KeplerLightCurve):
            self._lc = value
        else:
            raise ValueError("lc must be either a string, a KeplerLightCurve or a"
                             " KeplerLightCurveFile instance, got {}.".format(value))

def lc(self, value):
        # this enables `lc` to be either a string
        # or an object from KeplerLightCurveFile
        if isinstance(value, str):
            self._lc = KeplerLightCurveFile(value).PDCSAP_FLUX
        elif isinstance(value, KeplerLightCurveFile):
            self._lc = value.SAP_FLUX
        elif isinstance(value, KeplerLightCurve):
            self._lc = value
        else:
            raise ValueError("lc must be either a string, a KeplerLightCurve or a"
                             " KeplerLightCurveFile instance, got {}.".format(value))