@classmethod
def preload_SAM(cls, h5_file, sites, tech, **kwargs):
    """
        Placeholder for classmethod that will pre-load project_points for SAM

        Parameters
        ----------
        h5_file : str
            h5_file to extract resource from
        sites : list
            List of sites to be provided to SAM
        tech : str
            Technology to be run by SAM
        kwargs : dict
            kwargs to init resource class
        """
