diff --git a/src/Api/EmailValidationV4.php b/src/Api/EmailValidationV4.php
index 64fba92..e2263a4 100644
--- a/src/Api/EmailValidationV4.php
+++ b/src/Api/EmailValidationV4.php
@@ -34,8 +34,9 @@ class EmailValidationV4 extends HttpApi
      * Addresses are validated based off defined checks.
      *
      * @param string $address An email address to validate. Maximum: 512 characters.
-     * @param bool $providerLookup
+     *
      * @return ValidateResponse|ResponseInterface
+     *
      * @throws Exception Thrown when we don't catch a Client or Server side Exception
      */
     public function validate(string $address, bool $providerLookup = true)
@@ -53,9 +54,10 @@ class EmailValidationV4 extends HttpApi
     }
 
     /**
-     * @param string $listId
-     * @param $filePath - file path or file content
+     * @param mixed $filePath - file path or file content
+     *
      * @return mixed|ResponseInterface
+     *
      * @throws Exception
      */
     public function createBulkJob(string $listId, $filePath)
@@ -81,10 +83,7 @@ class EmailValidationV4 extends HttpApi
     }
 
     /**
-     * @param string $fieldName
      * @param array $filePath ['fileContent' => 'content'] or ['filePath' => '/foo/bar']
-     *
-     * @return array
      */
     private function prepareFile(string $fieldName, array $filePath): array
     {
@@ -118,7 +117,6 @@ class EmailValidationV4 extends HttpApi
 
     /**
      * Close open resources.
-     * @param array $params
      */
     private function closeResources(array $params): void
     {
@@ -130,8 +128,8 @@ class EmailValidationV4 extends HttpApi
     }
 
     /**
-     * @param string $listId
      * @return DeleteBulkJobResponse|ResponseInterface
+     *
      * @throws Exception
      */
     public function deleteBulkJob(string $listId)
@@ -144,8 +142,8 @@ class EmailValidationV4 extends HttpApi
     }
 
     /**
-     * @param string $listId
      * @return GetBulkJobResponse|ResponseInterface
+     *
      * @throws Exception
      */
     public function getBulkJob(string $listId)
@@ -158,8 +156,8 @@ class EmailValidationV4 extends HttpApi
     }
 
     /**
-     * @param int $limit
      * @return GetBulkJobsResponse|ResponseInterface
+     *
      * @throws Exception
      */
     public function getBulkJobs(int $limit = 500)
@@ -187,9 +185,8 @@ class EmailValidationV4 extends HttpApi
     }
 
     /**
-     * @param string $previewId
-     * @param $filePath
      * @return mixed|ResponseInterface
+     *
      * @throws Exception
      */
     public function createBulkPreview(string $previewId, $filePath)
@@ -215,8 +212,8 @@ class EmailValidationV4 extends HttpApi
     }
 
     /**
-     * @param string $previewId
      * @return mixed|ResponseInterface
+     *
      * @throws Exception
      */
     public function getBulkPreview(string $previewId)
@@ -229,7 +226,6 @@ class EmailValidationV4 extends HttpApi
     }
 
     /**
-     * @param string $previewId
      * @return bool
      */
     public function deleteBulkPreview(string $previewId)
@@ -238,12 +234,12 @@ class EmailValidationV4 extends HttpApi
 
         $response = $this->httpDelete(sprintf('/v4/address/validate/preview/%s', $previewId));
 
-        return $response->getStatusCode() === 204;
+        return 204 === $response->getStatusCode();
     }
 
     /**
-     * @param string $previewId
      * @return mixed|ResponseInterface
+     *
      * @throws Exception
      */
     public function promoteBulkPreview(string $previewId)
diff --git a/src/Model/EmailValidationV4/CreateBulkJobResponse.php b/src/Model/EmailValidationV4/CreateBulkJobResponse.php
index 75bf7d6..c94a927 100644
--- a/src/Model/EmailValidationV4/CreateBulkJobResponse.php
+++ b/src/Model/EmailValidationV4/CreateBulkJobResponse.php
@@ -39,17 +39,11 @@ final class CreateBulkJobResponse implements ApiResponse
         return $model;
     }
 
-    /**
-     * @return string|null
-     */
     public function getId(): ?string
     {
         return $this->id;
     }
 
-    /**
-     * @return string|null
-     */
     public function getMessage(): ?string
     {
         return $this->message;
diff --git a/src/Model/EmailValidationV4/CreateBulkPreviewResponse.php b/src/Model/EmailValidationV4/CreateBulkPreviewResponse.php
index 264f3a4..f4db70d 100644
--- a/src/Model/EmailValidationV4/CreateBulkPreviewResponse.php
+++ b/src/Model/EmailValidationV4/CreateBulkPreviewResponse.php
@@ -39,17 +39,11 @@ final class CreateBulkPreviewResponse implements ApiResponse
         return $model;
     }
 
-    /**
-     * @return string|null
-     */
     public function getId(): ?string
     {
         return $this->id;
     }
 
-    /**
-     * @return string|null
-     */
     public function getMessage(): ?string
     {
         return $this->message;
diff --git a/src/Model/EmailValidationV4/DeleteBulkJobResponse.php b/src/Model/EmailValidationV4/DeleteBulkJobResponse.php
index 1e12c6e..e698d65 100644
--- a/src/Model/EmailValidationV4/DeleteBulkJobResponse.php
+++ b/src/Model/EmailValidationV4/DeleteBulkJobResponse.php
@@ -33,9 +33,6 @@ final class DeleteBulkJobResponse implements ApiResponse
         return $model;
     }
 
-    /**
-     * @return string|null
-     */
     public function getMessage(): ?string
     {
         return $this->message;
diff --git a/src/Model/EmailValidationV4/GetBulkJobsResponse.php b/src/Model/EmailValidationV4/GetBulkJobsResponse.php
index 3c6d9a4..a36df85 100644
--- a/src/Model/EmailValidationV4/GetBulkJobsResponse.php
+++ b/src/Model/EmailValidationV4/GetBulkJobsResponse.php
@@ -51,17 +51,11 @@ final class GetBulkJobsResponse implements ApiResponse
         return $model;
     }
 
-    /**
-     * @return int
-     */
     public function getTotal(): int
     {
         return $this->total;
     }
 
-    /**
-     * @return array
-     */
     public function getJobs(): array
     {
         return $this->jobs;
diff --git a/src/Model/EmailValidationV4/GetBulkPreviewResponse.php b/src/Model/EmailValidationV4/GetBulkPreviewResponse.php
index 1e3a14f..4961d97 100644
--- a/src/Model/EmailValidationV4/GetBulkPreviewResponse.php
+++ b/src/Model/EmailValidationV4/GetBulkPreviewResponse.php
@@ -18,7 +18,7 @@ final class GetBulkPreviewResponse implements ApiResponse
     /**
      * @var Preview
      */
-    private $preview = [];
+    private $preview;
 
     private function __construct()
     {
@@ -32,9 +32,6 @@ final class GetBulkPreviewResponse implements ApiResponse
         return $model;
     }
 
-    /**
-     * @return Preview
-     */
     public function getPreview(): Preview
     {
         return $this->preview;
diff --git a/src/Model/EmailValidationV4/GetBulkPreviewsResponse.php b/src/Model/EmailValidationV4/GetBulkPreviewsResponse.php
index 94ed581..af3a624 100644
--- a/src/Model/EmailValidationV4/GetBulkPreviewsResponse.php
+++ b/src/Model/EmailValidationV4/GetBulkPreviewsResponse.php
@@ -41,9 +41,6 @@ final class GetBulkPreviewsResponse implements ApiResponse
         return $model;
     }
 
-    /**
-     * @return array
-     */
     public function getPreviews(): array
     {
         return $this->previews;
diff --git a/src/Model/EmailValidationV4/Job.php b/src/Model/EmailValidationV4/Job.php
index 42d54e2..a2dc4c2 100644
--- a/src/Model/EmailValidationV4/Job.php
+++ b/src/Model/EmailValidationV4/Job.php
@@ -51,7 +51,7 @@ class Job implements ApiResponse
      */
     private $summary;
 
-    private function __construct()
+    final private function __construct()
     {
     }
 
@@ -70,57 +70,36 @@ class Job implements ApiResponse
         return $model;
     }
 
-    /**
-     * @return DateTimeImmutable|null
-     */
     public function getCreatedAt(): ?DateTimeImmutable
     {
         return $this->createdAt;
     }
 
-    /**
-     * @return JobDownloadUrl
-     */
     public function getDownloadUrl(): JobDownloadUrl
     {
         return $this->downloadUrl;
     }
 
-    /**
-     * @return string|null
-     */
     public function getId(): ?string
     {
         return $this->id;
     }
 
-    /**
-     * @return int
-     */
     public function getQuantity(): int
     {
         return $this->quantity;
     }
 
-    /**
-     * @return int
-     */
     public function getRecordsProcessed(): int
     {
         return $this->recordsProcessed;
     }
 
-    /**
-     * @return string|null
-     */
     public function getStatus(): ?string
     {
         return $this->status;
     }
 
-    /**
-     * @return mixed
-     */
     public function getSummary(): Summary
     {
         return $this->summary;
diff --git a/src/Model/EmailValidationV4/Preview.php b/src/Model/EmailValidationV4/Preview.php
index 0f5469b..02fb74f 100644
--- a/src/Model/EmailValidationV4/Preview.php
+++ b/src/Model/EmailValidationV4/Preview.php
@@ -46,7 +46,7 @@ class Preview implements ApiResponse
      */
     private $summary;
 
-    private function __construct()
+    final private function __construct()
     {
     }
 
@@ -58,55 +58,37 @@ class Preview implements ApiResponse
         $model->valid = $data['valid'] ?? null;
         $model->status = $data['status'] ?? null;
         $model->quantity = $data['quantity'] ?? null;
-        $model->createdAt = isset($data['created_at']) ? DateTimeImmutable::createFromFormat('U', (string)($data['created_at'])) : null;
+        $model->createdAt = isset($data['created_at']) ? DateTimeImmutable::createFromFormat('U', (string) ($data['created_at'])) : null;
         $model->summary = Summary::create($data['summary']);
 
         return $model;
     }
 
-    /**
-     * @return string|null
-     */
     public function getId(): ?string
     {
         return $this->id;
     }
 
-    /**
-     * @return bool|null
-     */
     public function isValid(): ?bool
     {
         return $this->valid;
     }
 
-    /**
-     * @return int
-     */
     public function getQuantity(): int
     {
         return $this->quantity;
     }
 
-    /**
-     * @return string|null
-     */
     public function getStatus(): ?string
     {
         return $this->status;
     }
 
-    /**
-     * @return DateTimeImmutable|null
-     */
     public function getCreatedAt(): ?DateTimeImmutable
     {
         return $this->createdAt;
     }
 
-    /**
-     * @return mixed
-     */
     public function getSummary(): Summary
     {
         return $this->summary;
diff --git a/src/Model/EmailValidationV4/PromoteBulkPreviewResponse.php b/src/Model/EmailValidationV4/PromoteBulkPreviewResponse.php
index 2933d99..58a311e 100644
--- a/src/Model/EmailValidationV4/PromoteBulkPreviewResponse.php
+++ b/src/Model/EmailValidationV4/PromoteBulkPreviewResponse.php
@@ -33,9 +33,6 @@ final class PromoteBulkPreviewResponse implements ApiResponse
         return $model;
     }
 
-    /**
-     * @return string|null
-     */
     public function getMessage(): ?string
     {
         return $this->message;
diff --git a/src/Model/EmailValidationV4/Summary.php b/src/Model/EmailValidationV4/Summary.php
index 3a58700..6ffe6c8 100644
--- a/src/Model/EmailValidationV4/Summary.php
+++ b/src/Model/EmailValidationV4/Summary.php
@@ -39,17 +39,11 @@ final class Summary implements ApiResponse
     {
     }
 
-    /**
-     * @return SummaryResult
-     */
     public function getResult(): SummaryResult
     {
         return $this->result;
     }
 
-    /**
-     * @return SummaryRisk
-     */
     public function getRisk(): SummaryRisk
     {
         return $this->risk;
diff --git a/src/Model/EmailValidationV4/SummaryResult.php b/src/Model/EmailValidationV4/SummaryResult.php
index 528855f..6de9332 100644
--- a/src/Model/EmailValidationV4/SummaryResult.php
+++ b/src/Model/EmailValidationV4/SummaryResult.php
@@ -56,41 +56,26 @@ final class SummaryResult implements ApiResponse
     {
     }
 
-    /**
-     * @return int
-     */
     public function getDeliverable(): int
     {
         return $this->deliverable;
     }
 
-    /**
-     * @return int
-     */
     public function getDoNotSend(): int
     {
         return $this->doNotSend;
     }
 
-    /**
-     * @return int
-     */
     public function getUndeliverable(): int
     {
         return $this->undeliverable;
     }
 
-    /**
-     * @return int
-     */
     public function getCatchAll(): int
     {
         return $this->catchAll;
     }
 
-    /**
-     * @return int
-     */
     public function getUnknown(): int
     {
         return $this->unknown;
diff --git a/src/Model/EmailValidationV4/SummaryRisk.php b/src/Model/EmailValidationV4/SummaryRisk.php
index c373e7b..01cb4a8 100644
--- a/src/Model/EmailValidationV4/SummaryRisk.php
+++ b/src/Model/EmailValidationV4/SummaryRisk.php
@@ -51,33 +51,21 @@ final class SummaryRisk implements ApiResponse
     {
     }
 
-    /**
-     * @return int
-     */
     public function getHigh(): int
     {
         return $this->high;
     }
 
-    /**
-     * @return int
-     */
     public function getLow(): int
     {
         return $this->low;
     }
 
-    /**
-     * @return int
-     */
     public function getMedium(): int
     {
         return $this->medium;
     }
 
-    /**
-     * @return int
-     */
     public function getUnknown(): int
     {
         return $this->unknown;
diff --git a/src/Model/EmailValidationV4/ValidateResponse.php b/src/Model/EmailValidationV4/ValidateResponse.php
index 70023d4..3ad6fbf 100644
--- a/src/Model/EmailValidationV4/ValidateResponse.php
+++ b/src/Model/EmailValidationV4/ValidateResponse.php
@@ -74,65 +74,41 @@ final class ValidateResponse implements ApiResponse
         return $model;
     }
 
-    /**
-     * @return string|null
-     */
     public function getAddress(): ?string
     {
         return $this->address;
     }
 
-    /**
-     * @return string|null
-     */
     public function getDidYouMean(): ?string
     {
         return $this->didYouMean;
     }
 
-    /**
-     * @return bool
-     */
     public function isDisposableAddress(): bool
     {
         return $this->isDisposableAddress;
     }
 
-    /**
-     * @return bool
-     */
     public function isRoleAddress(): bool
     {
         return $this->isRoleAddress;
     }
 
-    /**
-     * @return array
-     */
     public function getReason(): array
     {
         return $this->reason;
     }
 
-    /**
-     * @return string|null
-     */
     public function getResult(): ?string
     {
         return $this->result;
     }
 
-    /**
-     * @return string|null
-     */
     public function getRisk(): ?string
     {
         return $this->risk;
     }
 
-    /**
-     * @return string|null
-     */
     public function getRootAddress(): ?string
     {
         return $this->rootAddress;
diff --git a/tests/Model/EmailValidationV4/JobDownloadUrlTest.php b/tests/Model/EmailValidationV4/JobDownloadUrlTest.php
index e436c58..3d7f2dd 100644
--- a/tests/Model/EmailValidationV4/JobDownloadUrlTest.php
+++ b/tests/Model/EmailValidationV4/JobDownloadUrlTest.php
@@ -11,9 +11,7 @@ declare(strict_types=1);
 
 namespace Mailgun\Tests\Model\Event;
 
-use Mailgun\Model\EmailValidationV4\Job;
 use Mailgun\Model\EmailValidationV4\JobDownloadUrl;
-use Mailgun\Model\EmailValidationV4\Summary;
 use Mailgun\Tests\Model\BaseModelTest;
 
 class JobDownloadUrlTest extends BaseModelTest
diff --git a/tests/Model/EmailValidationV4/PreviewTest.php b/tests/Model/EmailValidationV4/PreviewTest.php
index 2adf2ff..1ef02b4 100644
--- a/tests/Model/EmailValidationV4/PreviewTest.php
+++ b/tests/Model/EmailValidationV4/PreviewTest.php
@@ -11,8 +11,6 @@ declare(strict_types=1);
 
 namespace Mailgun\Tests\Model\Event;
 
-use Mailgun\Model\EmailValidationV4\Job;
-use Mailgun\Model\EmailValidationV4\JobDownloadUrl;
 use Mailgun\Model\EmailValidationV4\Preview;
 use Mailgun\Model\EmailValidationV4\Summary;
 use Mailgun\Tests\Model\BaseModelTest;
diff --git a/tests/Model/EmailValidationV4/SummaryResultTest.php b/tests/Model/EmailValidationV4/SummaryResultTest.php
index 18d2008..5163481 100644
--- a/tests/Model/EmailValidationV4/SummaryResultTest.php
+++ b/tests/Model/EmailValidationV4/SummaryResultTest.php
@@ -11,11 +11,7 @@ declare(strict_types=1);
 
 namespace Mailgun\Tests\Model\Event;
 
-use Mailgun\Model\EmailValidationV4\Job;
-use Mailgun\Model\EmailValidationV4\JobDownloadUrl;
-use Mailgun\Model\EmailValidationV4\Summary;
 use Mailgun\Model\EmailValidationV4\SummaryResult;
-use Mailgun\Model\EmailValidationV4\SummaryRisk;
 use Mailgun\Tests\Model\BaseModelTest;
 
 class SummaryResultTest extends BaseModelTest
diff --git a/tests/Model/EmailValidationV4/SummaryRiskTest.php b/tests/Model/EmailValidationV4/SummaryRiskTest.php
index ae7bf40..dd834f1 100644
--- a/tests/Model/EmailValidationV4/SummaryRiskTest.php
+++ b/tests/Model/EmailValidationV4/SummaryRiskTest.php
@@ -11,10 +11,6 @@ declare(strict_types=1);
 
 namespace Mailgun\Tests\Model\Event;
 
-use Mailgun\Model\EmailValidationV4\Job;
-use Mailgun\Model\EmailValidationV4\JobDownloadUrl;
-use Mailgun\Model\EmailValidationV4\Summary;
-use Mailgun\Model\EmailValidationV4\SummaryResult;
 use Mailgun\Model\EmailValidationV4\SummaryRisk;
 use Mailgun\Tests\Model\BaseModelTest;
 
diff --git a/tests/Model/EmailValidationV4/SummaryTest.php b/tests/Model/EmailValidationV4/SummaryTest.php
index 18d48ee..50369c0 100644
--- a/tests/Model/EmailValidationV4/SummaryTest.php
+++ b/tests/Model/EmailValidationV4/SummaryTest.php
@@ -11,8 +11,6 @@ declare(strict_types=1);
 
 namespace Mailgun\Tests\Model\Event;
 
-use Mailgun\Model\EmailValidationV4\Job;
-use Mailgun\Model\EmailValidationV4\JobDownloadUrl;
 use Mailgun\Model\EmailValidationV4\Summary;
 use Mailgun\Model\EmailValidationV4\SummaryResult;
 use Mailgun\Model\EmailValidationV4\SummaryRisk;