static if(!(!__traits(isRef, M)))
static if(!(is(ti == bool)))
static if(!(is(ti == byte)))
static if(!(is(ti == short)))
static if(!(is(ti == int)))
static if(!(is(ti == long)))
static if(!(is(ti == ubyte)))
static if(!(is(ti == ushort)))
static if(!(is(ti == uint)))
static if(is(ti == ulong))