static RuntimeException fail() { throw new RuntimeException("fail"); }
static RuntimeException fail(Throwable e) { throw asRuntimeException(e); }
static RuntimeException fail(Object msg) { throw new RuntimeException(String.valueOf(msg)); }
static RuntimeException fail(S msg) { throw new RuntimeException(msg == null ? "" : msg); }
static RuntimeException fail(S msg, Throwable innerException) { throw new RuntimeException(msg, innerException); }

This is smartly declared so you can use either version:

  fail();
  throw fail();

(Actually JavaX, as of #752, now rewrites "fail()" to "throw fail()".)


// disabled for now to shorten some programs 
/*static RuntimeException fail(S msg, O... args) {
  throw new RuntimeException(format(msg, args));
}*/