SharedTable { public static boolean hasData() { return table.stream().flatMap(Collection::stream).anyMatch( Objects::nonNull); } private  SharedTable(); static void add(final String label, final String header,
		final long value); static void add(final String label, final String header,
		final double value); static void add(final String label, final String header,
		final Double value); static Table<DefaultColumn<Double>, Double> getTable(); static boolean hasData(); static void reset(); static final Double EMPTY_CELL; }
@Test public void testHasData() { SharedTable.add("Label", "Header", 0.0); assertTrue(SharedTable.hasData()); }
@Test public void testHasDataEmptyTable() { assertFalse(SharedTable.hasData()); }