diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..40698c3
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,10 @@
+language: php
+php:
+  - 7.4
+install:
+  - composer install
+script:
+  - vendor/bin/php-cs-fixer --dry-run -v --allow-risky=yes fix
+  - vendor/bin/phpcs
+  - vendor/bin/phpstan --memory-limit=256M analyze
+  - vendor/bin/phpunit
diff --git a/composer.json b/composer.json
index aecf3a9..99bb593 100644
--- a/composer.json
+++ b/composer.json
@@ -41,7 +41,6 @@
         "scan": [
             "php-cs-fixer --dry-run -v --allow-risky=yes fix",
             "phpcs",
-            "(cd tests && phpcs)",
             "phpstan --memory-limit=256M analyze"
         ],
         "test": "phpunit",
diff --git a/composer.lock b/composer.lock
index c7709b9..d0ac9aa 100644
--- a/composer.lock
+++ b/composer.lock
@@ -2303,16 +2303,16 @@
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "7.0.10",
+            "version": "7.0.12",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "f1884187926fbb755a9aaf0b3836ad3165b478bf"
+                "reference": "52f55786aa2e52c26cd9e2db20aff2981e0f7399"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/f1884187926fbb755a9aaf0b3836ad3165b478bf",
-                "reference": "f1884187926fbb755a9aaf0b3836ad3165b478bf",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/52f55786aa2e52c26cd9e2db20aff2981e0f7399",
+                "reference": "52f55786aa2e52c26cd9e2db20aff2981e0f7399",
                 "shasum": ""
             },
             "require": {
@@ -2362,7 +2362,13 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2019-11-20T13:55:58+00:00"
+            "funding": [
+                {
+                    "url": "https://github.com/sebastianbergmann",
+                    "type": "github"
+                }
+            ],
+            "time": "2020-11-27T06:08:35+00:00"
         },
         {
             "name": "phpunit/php-file-iterator",
@@ -2556,16 +2562,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "8.5.9",
+            "version": "8.5.11",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "f5c8a5dd5e7e8d68d7562bfb48d47287d33937d6"
+                "reference": "3123601e3b29339b20129acc3f989cfec3274566"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/f5c8a5dd5e7e8d68d7562bfb48d47287d33937d6",
-                "reference": "f5c8a5dd5e7e8d68d7562bfb48d47287d33937d6",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/3123601e3b29339b20129acc3f989cfec3274566",
+                "reference": "3123601e3b29339b20129acc3f989cfec3274566",
                 "shasum": ""
             },
             "require": {
@@ -2581,7 +2587,7 @@
                 "phar-io/version": "^2.0.1",
                 "php": "^7.2",
                 "phpspec/prophecy": "^1.10.3",
-                "phpunit/php-code-coverage": "^7.0.10",
+                "phpunit/php-code-coverage": "^7.0.12",
                 "phpunit/php-file-iterator": "^2.0.2",
                 "phpunit/php-text-template": "^1.2.1",
                 "phpunit/php-timer": "^2.1.2",
@@ -2645,7 +2651,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2020-11-10T12:51:38+00:00"
+            "time": "2020-11-27T12:46:45+00:00"
         },
         {
             "name": "pimple/pimple",
diff --git a/src/Extractors/GoogleAnalytics.php b/src/Extractors/GoogleAnalytics.php
index 237836d..270af53 100644
--- a/src/Extractors/GoogleAnalytics.php
+++ b/src/Extractors/GoogleAnalytics.php
@@ -79,7 +79,7 @@ class GoogleAnalytics extends Extractor
     /**
      * The dimension or dimensions used to group analytics data (frequently "ga:date").
      *
-     * ```pho
+     * ```php
      * $options = ['dimensions' => ['ga:date']];
      * ```
      *
@@ -146,7 +146,7 @@ class GoogleAnalytics extends Extractor
 
     private \Google_Service_AnalyticsReporting $reportingService;
 
-    public \Google_Service_AnalyticsReporting_ReportRequest $reportRequest;
+    private \Google_Service_AnalyticsReporting_ReportRequest $reportRequest;
 
     private int $clientReqCount = 0;
 
@@ -159,11 +159,11 @@ class GoogleAnalytics extends Extractor
      * setters for analytics service and analytics reporting service must be
      * used to inject the required dependencies.
      *
-     * @param string|null $config The configuration json file
+     * @param string $config The configuration json file
      *
      * @throws GoogleException
      */
-    public function __construct(?string $config = '')
+    public function __construct(string $config = '')
     {
         if ('' !== $config && file_exists($config)) {
             $client = new \Google_Client();
@@ -301,7 +301,10 @@ private function isWantedView(string $name): bool
         return !isset($this->input) || 0 === count($this->views) || in_array($name, $this->views, true);
     }
 
-    public function reportRequest(string $viewId): \Google_Service_AnalyticsReporting_GetReportsRequest
+    /**
+     * Creates GetReportsRequest object with current viewID and the shared request parameters set earlier.
+     */
+    private function reportRequest(string $viewId): \Google_Service_AnalyticsReporting_GetReportsRequest
     {
         $this->reportRequest->setViewId($viewId);
 
@@ -311,14 +314,19 @@ public function reportRequest(string $viewId): \Google_Service_AnalyticsReportin
         return $body;
     }
 
-    public function reportRequestSetup(array $dimensions, array $metrics, string $start, string $end): void
+    /**
+     * Sets general parameters for report requests.
+     *
+     * Our requests only differ in having a different viewID, so we only need to set these once.
+     */
+    private function reportRequestSetup(array $dimensions, array $metrics, string $start, string $end): void
     {
         $this->reportRequest = new \Google_Service_AnalyticsReporting_ReportRequest();
-        $this->reportRequest->setDateRanges(Helper::dateRange($start, $end));
-        $this->reportRequest->setDimensions(Helper::dimensions($dimensions));
+        $this->reportRequest->setDateRanges(Request::dateRange($start, $end));
+        $this->reportRequest->setDimensions(Request::dimensions($dimensions));
         $this->reportRequest->setDimensionFilterClauses([]);
-        $this->reportRequest->setMetrics(Helper::metrics($metrics));
-        $this->reportRequest->setPageSize(Helper::REPORT_PAGE_SIZE);
+        $this->reportRequest->setMetrics(Request::metrics($metrics));
+        $this->reportRequest->setPageSize(Request::REPORT_PAGE_SIZE);
         $this->reportRequest->setIncludeEmptyRows(true);
     }
 
diff --git a/src/Extractors/Helper.php b/src/Extractors/Request.php
similarity index 99%
rename from src/Extractors/Helper.php
rename to src/Extractors/Request.php
index 23f1ac4..b1ab885 100644
--- a/src/Extractors/Helper.php
+++ b/src/Extractors/Request.php
@@ -13,7 +13,7 @@
 /**
  * Provides some static methods that can be used to in Extractor code and in tests.
  */
-class Helper
+class Request
 {
     public const REPORT_PAGE_SIZE = 1000;