public static Throttler limitToOnceEvery(long millis) {
        return new Throttler(millis);
    }
Returns a {@link Throttler} that never executes the same request more
than once every {@code millis}.

@param millis  minimum frequency in milliseconds
@return        the created throttler
tool-parent/tool-core/src/main/java/com/speedment/tool/core/internal/util/Throttler.java