Fix missing types on doc block and deduplicate the method name

lib/private/files/storage/wrapper/encryption.php

@@ -413,10 +413,10 @@ class Encryption extends Wrapper {
 	 * copy file between two storages
 	 *
 	 * @param \OCP\Files\Storage $sourceStorage
-	 * @param $sourceInternalPath
-	 * @param $targetInternalPath
-	 * @param $preserveMtime
-	 * @param $isRename
+	 * @param string $sourceInternalPath
+	 * @param string $targetInternalPath
+	 * @param bool $preserveMtime
+	 * @param bool $isRename
 	 * @return bool
 	 */
 	private function copyBetweenStorage(\OCP\Files\Storage $sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, $isRename) {

tests/lib/files/storage/wrapper/encryption.php

@@ -199,7 +199,7 @@ class Encryption extends \Test\Files\Storage\Storage {
 	 * @param boolean $copyKeysReturn
 	 * @param boolean $shouldUpdate
 	 */
-	public function testCopy($source,
+	public function testCopyEncryption($source,
 							 $target,
 							 $encryptionEnabled,
 							 $copyKeysReturn,