/**
  * Tests ParametersTrait removeParameter method.
  */
 public function testTraitRemoveParameter()
 {
     $highlight = new Highlight();
     $highlight->addParameter('_source', ['include' => ['title']]);
     $highlight->removeParameter('_source');
     $result = $highlight->hasParameter('_source');
     $this->assertFalse($result);
 }