         let expectation = expectationWithDescription(description)
         
         // analyze speech
-        service!.getProfile(kennedySpeech!) { profile, error in
+        service.getProfile(kennedySpeech) { profile, error in
             
             // verify expected response
             XCTAssertNotNil(profile)

            contentType: MediaType.Plain.rawValue,
            charset: "UTF-8",
            language: "en-us",
            content: kennedySpeech!,
            parentID: "",
            reply: false,
            forward: false)
        
        // analyze duplicate content items
        service!.getProfile([contentItem, contentItem]) { profile, error in
            
            // verify expected response
            XCTAssertNotNil(profile)

        let description = "Try to analyze text that is too short (less than 100 words)."
        let expectation = expectationWithDescription(description)
        
        service.getProfile(mobyDickIntro) { profile, error in
            // verify expected response
            XCTAssertNil(profile)
            XCTAssertNotNil(error)
