revision = src[si++];
        sub_authority_count = src[si++];
        identifier_authority = new byte[6];
        System.arraycopy(src, si, identifier_authority, 0, 6);
        si += 6;
        if (sub_authority_count > 100)
            throw new RuntimeException( "Invalid SID sub_authority_count" );
        sub_authority = new int[sub_authority_count];
        for (int i = 0; i < sub_authority_count; i++) {

        this.sub_authority_count = (byte) ( domsid.sub_authority_count + id.sub_authority_count );
        this.sub_authority = new int[this.sub_authority_count];
        int i;
        for ( i = 0; i < domsid.sub_authority_count; i++ ) {
            this.sub_authority[ i ] = domsid.sub_authority[ i ];
        }