public function testAddNoteToResearch()
 {
     $research = new Research();
     $this->assertEquals(0, count($research->notes));
     $aNote = $research->addNewNote("This is my first note");
     $this->assertEquals(1, $aNote->id);
     $this->assertEquals("This is my first note", $aNote->text);
     $this->assertEquals(1, count($research->notes));
     $aSecondNote = $research->addNewNote("This is my second note");
     $this->assertEquals(2, $aSecondNote->id);
     $this->assertEquals("This is my second note", $aSecondNote->text);
     $this->assertEquals(2, count($research->notes));
 }