Code style, doc-blocks and clean-up

.gitignore

@@ -2,7 +2,3 @@ composer.phar
 /vendor/
 /private/
 /tests/functional/*.pdf
-
-# Commit your application's lock file https://getcomposer.org/doc/01-basic-usage.md#commit-your-composer-lock-file-to-version-control
-# You may choose to ignore a library lock file http://getcomposer.org/doc/02-libraries.md#lock-file
-# composer.lock

src/SignatureModule.php

@@ -58,7 +58,7 @@ public function __construct(
     /**
      * @return string
      */
-    public function getCertificate()
+    public function getCertificate(): string
     {
         return $this->identity->getSigningCertificate();
     }
@@ -77,7 +77,7 @@ public function createSignature(\SetaPDF_Core_Reader_FilePath $tmpPath): string
         $this->module->setExtraCertificates([$this->client->getCertificatePath()]);
 
         // For backwards compatibility
-        if (method_exists($this->module, 'setOcspResponse')) {
+        if (\method_exists($this->module, 'setOcspResponse')) {
             $this->module->setOcspResponse($this->identity->getOcspResponse());
         } else {
             $this->addOcspResponse();
@@ -93,9 +93,12 @@ public function createSignature(\SetaPDF_Core_Reader_FilePath $tmpPath): string
 
     /**
      * Adds the OCSP response as a signed attribute in the CMS container.
+     *
+     * @throws \SetaPDF_Signer_Exception
      */
     protected function addOcspResponse(): void
     {
+        /** @var \SetaPDF_Signer_Asn1_Element $cms */
         $cms = $this->module->getCms();
         $signerInfos = \SetaPDF_Signer_Asn1_Element::findByPath('1/0/4', $cms);
         if (($signerInfos->getIdent() & "\xA1") === "\xA1") {

src/TimestampModule.php

@@ -24,6 +24,9 @@ class TimestampModule implements
      */
     protected $identity;
 
+    /**
+     * @param Client $client
+     */
     public function __construct(Client $client)
     {
         $this->client = $client;
@@ -50,7 +53,7 @@ public function createTimestamp($data)
      * @param string|\SetaPDF_Core_Reader_FilePath $data The hash of the main signature
      * @return string
      */
-    protected function getHash($data)
+    protected function getHash($data): string
     {
         if ($data instanceof \SetaPDF_Core_Reader_FilePath) {
             return \hash_file('sha256', $data->getPath());