@Override
	public BitStore range(int from, int to) {
		return store.range(from, to).immutableView();
	}
@ Override public BitStore range ( int from , int to ) { return store . range ( from , to ) . immutableView ( ) ; }
/*
@Override
public Op and() {
return IMM_AND;
}

@Override
public Op or() {
return IMM_OR;
}

@Override
public Op xor() {
return IMM_XOR;
}

@Override
public Op set() {
return IMM_SET;
}