### Question:
ElementImpl implements Element { @Override public boolean hasInterval(Interval interval) { checkTimeRepresentationInterval(); return hasTime(interval); } ElementImpl(Object id, GraphStore graphStore); @Override Object getId(); @Override String getLabel(); @Override Object getAttribute(String key); @Override Object getAttribute(Column column); @Override Object getAttribute(String key, double timestamp); @Override Object getAttribute(Column column, double timestamp); @Override Object getAttribute(String key, Interval interval); @Override Object getAttribute(Column column, Interval interval); @Override Object getAttribute(String key, GraphView view); @Override Object getAttribute(Column column, GraphView view); @Override Object[] getAttributes(); @Override Set<String> getAttributeKeys(); @Override ColumnIterable getAttributeColumns(); @Override Object removeAttribute(String key); @Override Object removeAttribute(Column column); @Override Object removeAttribute(Column column, double timestamp); @Override Object removeAttribute(String key, double timestamp); @Override Object removeAttribute(Column column, Interval interval); @Override Object removeAttribute(String key, Interval interval); @Override void setLabel(String label); @Override void setAttribute(String key, Object value); @Override void setAttribute(Column column, Object value); @Override void setAttribute(String key, Object value, double timestamp); @Override void setAttribute(Column column, Object value, double timestamp); @Override void setAttribute(String key, Object value, Interval interval); @Override void setAttribute(Column column, Object value, Interval interval); @Override boolean addTimestamp(double timestamp); @Override boolean addInterval(Interval interval); @Override boolean removeTimestamp(double timestamp); @Override boolean removeInterval(Interval interval); @Override double[] getTimestamps(); @Override Interval[] getIntervals(); @Override boolean hasTimestamp(double timestamp); @Override boolean hasInterval(Interval interval); @Override Iterable<Map.Entry> getAttributes(Column column); @Override void clearAttributes(); @Override int hashCode(); @Override boolean equals(Object obj);  }### Answer:
@Test public void testHasIntervalEmpty() { GraphStore store = getIntervalGraphStore(); NodeImpl node = new NodeImpl("0", store); Assert.assertFalse(node.hasInterval(new Interval(1.0, 2.0))); }