Create from prefix object.

def from_prefix(cls, container, prefix):
        """Create from prefix object."""
        if cls._is_gs_folder(prefix):
            name, suffix, extra = prefix.name.partition(cls._gs_folder_suffix)
            if (suffix, extra) == (cls._gs_folder_suffix, ''):
                # Patch GS specific folder to remove suffix.
                prefix.name = name

        return super(GsObject, cls).from_prefix(container, prefix)