def dst_to_src(self,dst_file):
        for map in self.mappings:
            src_uri = map.dst_to_src(dst_file)
            if (src_uri is not None):
                return(src_uri)
        # Must have failed if loop exited
        raise MapperError("Unable to translate destination path (%s) into a source URI." % (dst_file))
Map destination path to source URI
dataset/ETHPy150Open resync/resync/resync/mapper.py/Mapper.dst_to_src