### Question:
QueryResults implements org.modeshape.graph.query.QueryResults { @Override public String toString() { return toString(null, Integer.MAX_VALUE); } QueryResults( Columns columns,
                         Statistics statistics,
                         List<Object[]> tuples,
                         Problems problems,
                         String plan );  QueryResults( Columns columns,
                         Statistics statistics,
                         List<Object[]> tuples );  QueryResults( Columns columns,
                         Statistics statistics,
                         Problems problems );  QueryResults( Columns columns,
                         Statistics statistics ); Columns getColumns(); Cursor getCursor(); List<Object[]> getTuples(); int getRowCount(); String getPlan(); Problems getProblems(); boolean hasErrors(); boolean hasWarnings(); Statistics getStatistics(); @Override String toString(); String toString( TypeSystem typeSystem,
                            int maxTuples ); void toString( TypeSystem typeSystem,
                          StringBuilder sb ); void toString( TypeSystem typeSystem,
                          StringBuilder sb,
                          int maxTuples );  }### Answer:
@Test public void shouldHaveToString() { columnsWithScores.toString(); columnsWithoutScores.toString(); }