code: static <T, R> R privilegedExecution(Function<T, R> function, T t) {
          return privilegedExecution().execute(function, t);
      }
docs: Execute the given function, in a privileged block if a security manager is checking.
  @param function the function
  @param t        the argument to the function
  @param <T>      the type of the argument to the function
  @param <R>      the type of the function return value
  @return         the return value of the function