code: public static final Function<Collection<Long>, Period> longFieldCollectionToPeriod(final PeriodType periodType, final Chronology chronology) {
  		return new LongFieldCollectionToPeriod(periodType, chronology);
  	}
docs: <p>
  The given {@link Long} targets representing the time in milliseconds will be used as the start
  and end instants of the {@link Period} returned
  </p>
  
  @param periodType the {@link PeriodType} to be created. It specifies which duration fields are to be used
  @param chronology {@link Chronology} to be used
  
  @return the {@link Period} created from the input and arguments