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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def remote_access(self, service=None, use_xarray=None):
 """Access the remote dataset. Open the remote dataset and get a netCDF4-compatible `Dataset` object providing index-based subsetting capabilities. Parameters service : str, optional The name of the service to use for access to the dataset, either 'CdmRemote' or 'OPENDAP'. Defaults to 'CdmRemote'. Returns ------- Dataset Object for netCDF4-like access to the dataset """

        if service is None:
            service = 'CdmRemote' if 'CdmRemote' in self.access_urls else 'OPENDAP'

        if service not in (CaseInsensitiveStr('CdmRemote'), CaseInsensitiveStr('OPENDAP')):
            raise ValueError(service + ' is not a valid service for remote_access')

        return self.access_with_service(service, use_xarray)