diff --git a/lib/private/ContactsManager.php b/lib/private/ContactsManager.php
index 4084205b06d723e9e1365573e16894ad1776e882..999b65979785276e7541c20411def278bcbc935a 100644
--- a/lib/private/ContactsManager.php
+++ b/lib/private/ContactsManager.php
@@ -29,182 +29,185 @@
  *
  */
 
-namespace OC {
-
-	class ContactsManager implements \OCP\Contacts\IManager {
-
-		/**
-		 * This function is used to search and find contacts within the users address books.
-		 * In case $pattern is empty all contacts will be returned.
-		 *
-		 * @param string $pattern which should match within the $searchProperties
-		 * @param array $searchProperties defines the properties within the query pattern should match
-		 * @param array $options = array() to define the search behavior
-		 * 	- 'escape_like_param' - If set to false wildcards _ and % are not escaped
-		 * 	- 'limit' - Set a numeric limit for the search results
-		 * 	- 'offset' - Set the offset for the limited search results
-		 * @return array an array of contacts which are arrays of key-value-pairs
-		 */
-		public function search($pattern, $searchProperties = [], $options = []) {
-			$this->loadAddressBooks();
-			$result = [];
-			foreach ($this->addressBooks as $addressBook) {
-				$r = $addressBook->search($pattern, $searchProperties, $options);
-				$contacts = [];
-				foreach ($r as $c) {
-					$c['addressbook-key'] = $addressBook->getKey();
-					$contacts[] = $c;
-				}
-				$result = array_merge($result, $contacts);
+namespace OC;
+
+use OCP\Constants;
+use OCP\Contacts\IManager;
+use OCP\IAddressBook;
+
+class ContactsManager implements IManager {
+
+	/**
+	 * This function is used to search and find contacts within the users address books.
+	 * In case $pattern is empty all contacts will be returned.
+	 *
+	 * @param string $pattern which should match within the $searchProperties
+	 * @param array $searchProperties defines the properties within the query pattern should match
+	 * @param array $options = array() to define the search behavior
+	 * 	- 'escape_like_param' - If set to false wildcards _ and % are not escaped
+	 * 	- 'limit' - Set a numeric limit for the search results
+	 * 	- 'offset' - Set the offset for the limited search results
+	 * @return array an array of contacts which are arrays of key-value-pairs
+	 */
+	public function search($pattern, $searchProperties = [], $options = []) {
+		$this->loadAddressBooks();
+		$result = [];
+		foreach ($this->addressBooks as $addressBook) {
+			$r = $addressBook->search($pattern, $searchProperties, $options);
+			$contacts = [];
+			foreach ($r as $c) {
+				$c['addressbook-key'] = $addressBook->getKey();
+				$contacts[] = $c;
 			}
-
-			return $result;
+			$result = array_merge($result, $contacts);
 		}
 
-		/**
-		 * This function can be used to delete the contact identified by the given id
-		 *
-		 * @param object $id the unique identifier to a contact
-		 * @param string $addressBookKey identifier of the address book in which the contact shall be deleted
-		 * @return bool successful or not
-		 */
-		public function delete($id, $addressBookKey) {
-			$addressBook = $this->getAddressBook($addressBookKey);
-			if (!$addressBook) {
-				return null;
-			}
-
-			if ($addressBook->getPermissions() & \OCP\Constants::PERMISSION_DELETE) {
-				return $addressBook->delete($id);
-			}
+		return $result;
+	}
 
+	/**
+	 * This function can be used to delete the contact identified by the given id
+	 *
+	 * @param object $id the unique identifier to a contact
+	 * @param string $addressBookKey identifier of the address book in which the contact shall be deleted
+	 * @return bool successful or not
+	 */
+	public function delete($id, $addressBookKey) {
+		$addressBook = $this->getAddressBook($addressBookKey);
+		if (!$addressBook) {
 			return null;
 		}
 
-		/**
-		 * This function is used to create a new contact if 'id' is not given or not present.
-		 * Otherwise the contact will be updated by replacing the entire data set.
-		 *
-		 * @param array $properties this array if key-value-pairs defines a contact
-		 * @param string $addressBookKey identifier of the address book in which the contact shall be created or updated
-		 * @return array representing the contact just created or updated
-		 */
-		public function createOrUpdate($properties, $addressBookKey) {
-			$addressBook = $this->getAddressBook($addressBookKey);
-			if (!$addressBook) {
-				return null;
-			}
+		if ($addressBook->getPermissions() & Constants::PERMISSION_DELETE) {
+			return $addressBook->delete($id);
+		}
 
-			if ($addressBook->getPermissions() & \OCP\Constants::PERMISSION_CREATE) {
-				return $addressBook->createOrUpdate($properties);
-			}
+		return null;
+	}
 
+	/**
+	 * This function is used to create a new contact if 'id' is not given or not present.
+	 * Otherwise the contact will be updated by replacing the entire data set.
+	 *
+	 * @param array $properties this array if key-value-pairs defines a contact
+	 * @param string $addressBookKey identifier of the address book in which the contact shall be created or updated
+	 * @return array representing the contact just created or updated
+	 */
+	public function createOrUpdate($properties, $addressBookKey) {
+		$addressBook = $this->getAddressBook($addressBookKey);
+		if (!$addressBook) {
 			return null;
 		}
 
-		/**
-		 * Check if contacts are available (e.g. contacts app enabled)
-		 *
-		 * @return bool true if enabled, false if not
-		 */
-		public function isEnabled() {
-			return !empty($this->addressBooks) || !empty($this->addressBookLoaders);
+		if ($addressBook->getPermissions() & Constants::PERMISSION_CREATE) {
+			return $addressBook->createOrUpdate($properties);
 		}
 
-		/**
-		 * @param \OCP\IAddressBook $addressBook
-		 */
-		public function registerAddressBook(\OCP\IAddressBook $addressBook) {
-			$this->addressBooks[$addressBook->getKey()] = $addressBook;
-		}
+		return null;
+	}
 
-		/**
-		 * @param \OCP\IAddressBook $addressBook
-		 */
-		public function unregisterAddressBook(\OCP\IAddressBook $addressBook) {
-			unset($this->addressBooks[$addressBook->getKey()]);
-		}
+	/**
+	 * Check if contacts are available (e.g. contacts app enabled)
+	 *
+	 * @return bool true if enabled, false if not
+	 */
+	public function isEnabled() {
+		return !empty($this->addressBooks) || !empty($this->addressBookLoaders);
+	}
 
-		/**
-		 * Return a list of the user's addressbooks display names
-		 * ! The addressBook displayName are not unique, please use getUserAddressBooks
-		 *
-		 * @return array
-		 * @since 6.0.0
-		 * @deprecated 16.0.0 - Use `$this->getUserAddressBooks()` instead
-		 */
-		public function getAddressBooks() {
-			$this->loadAddressBooks();
-			$result = [];
-			foreach ($this->addressBooks as $addressBook) {
-				$result[$addressBook->getKey()] = $addressBook->getDisplayName();
-			}
+	/**
+	 * @param IAddressBook $addressBook
+	 */
+	public function registerAddressBook(IAddressBook $addressBook) {
+		$this->addressBooks[$addressBook->getKey()] = $addressBook;
+	}
 
-			return $result;
-		}
+	/**
+	 * @param IAddressBook $addressBook
+	 */
+	public function unregisterAddressBook(IAddressBook $addressBook) {
+		unset($this->addressBooks[$addressBook->getKey()]);
+	}
 
-		/**
-		 * Return a list of the user's addressbooks
-		 *
-		 * @return IAddressBook[]
-		 * @since 16.0.0
-		 */
-		public function getUserAddressBooks(): array {
-			$this->loadAddressBooks();
-			return $this->addressBooks;
+	/**
+	 * Return a list of the user's addressbooks display names
+	 * ! The addressBook displayName are not unique, please use getUserAddressBooks
+	 *
+	 * @return IAddressBook[]
+	 * @since 6.0.0
+	 * @deprecated 16.0.0 - Use `$this->getUserAddressBooks()` instead
+	 */
+	public function getAddressBooks() {
+		$this->loadAddressBooks();
+		$result = [];
+		foreach ($this->addressBooks as $addressBook) {
+			$result[$addressBook->getKey()] = $addressBook->getDisplayName();
 		}
 
-		/**
-		 * removes all registered address book instances
-		 */
-		public function clear() {
-			$this->addressBooks = [];
-			$this->addressBookLoaders = [];
-		}
+		return $result;
+	}
 
-		/**
-		 * @var \OCP\IAddressBook[] which holds all registered address books
-		 */
-		private $addressBooks = [];
-
-		/**
-		 * @var \Closure[] to call to load/register address books
-		 */
-		private $addressBookLoaders = [];
-
-		/**
-		 * In order to improve lazy loading a closure can be registered which will be called in case
-		 * address books are actually requested
-		 *
-		 * @param \Closure $callable
-		 */
-		public function register(\Closure $callable) {
-			$this->addressBookLoaders[] = $callable;
-		}
+	/**
+	 * Return a list of the user's addressbooks
+	 *
+	 * @return IAddressBook[]
+	 * @since 16.0.0
+	 */
+	public function getUserAddressBooks(): array {
+		$this->loadAddressBooks();
+		return $this->addressBooks;
+	}
 
-		/**
-		 * Get (and load when needed) the address book for $key
-		 *
-		 * @param string $addressBookKey
-		 * @return \OCP\IAddressBook
-		 */
-		protected function getAddressBook($addressBookKey) {
-			$this->loadAddressBooks();
-			if (!array_key_exists($addressBookKey, $this->addressBooks)) {
-				return null;
-			}
+	/**
+	 * removes all registered address book instances
+	 */
+	public function clear() {
+		$this->addressBooks = [];
+		$this->addressBookLoaders = [];
+	}
+
+	/**
+	 * @var IAddressBook[] which holds all registered address books
+	 */
+	private $addressBooks = [];
+
+	/**
+	 * @var \Closure[] to call to load/register address books
+	 */
+	private $addressBookLoaders = [];
+
+	/**
+	 * In order to improve lazy loading a closure can be registered which will be called in case
+	 * address books are actually requested
+	 *
+	 * @param \Closure $callable
+	 */
+	public function register(\Closure $callable) {
+		$this->addressBookLoaders[] = $callable;
+	}
 
-			return $this->addressBooks[$addressBookKey];
+	/**
+	 * Get (and load when needed) the address book for $key
+	 *
+	 * @param string $addressBookKey
+	 * @return IAddressBook
+	 */
+	protected function getAddressBook($addressBookKey) {
+		$this->loadAddressBooks();
+		if (!array_key_exists($addressBookKey, $this->addressBooks)) {
+			return null;
 		}
 
-		/**
-		 * Load all address books registered with 'register'
-		 */
-		protected function loadAddressBooks() {
-			foreach ($this->addressBookLoaders as $callable) {
-				$callable($this);
-			}
-			$this->addressBookLoaders = [];
+		return $this->addressBooks[$addressBookKey];
+	}
+
+	/**
+	 * Load all address books registered with 'register'
+	 */
+	protected function loadAddressBooks() {
+		foreach ($this->addressBookLoaders as $callable) {
+			$callable($this);
 		}
+		$this->addressBookLoaders = [];
 	}
 }