Ignore (all) warnings a block of code

It would be nice to be able to ignore a block of code rather than only a single line for a particular or even all warnings. Something like this:

//FI:all off - turn off all warnings
some code here
//FI:all on - turn on warnings again

or
// FI:W508 off - ignore empty procedures
lots of empty procedures here
// FI:W508 on - warn about empty procedures again