Fix phpdoc return types

eg set the auto write + others
or set/unset can be chagned for single sets

www/lib/CoreLibs/Create/Session.php

@@ -363,11 +363,12 @@ class Session
 	 * set the auto write close flag
 	 *
 	 * @param  bool $flag
-	 * @return void
+	 * @return Session
 	 */
-	public function setAutoWriteClose(bool $flag): void
+	public function setAutoWriteClose(bool $flag): Session
 	{
 		$this->auto_write_close = $flag;
+		return $this;
 	}
 
 	/**
@@ -513,14 +514,15 @@ class Session
 	 *
 	 * @param  string $name  array name in _SESSION
 	 * @param  mixed  $value value to set (can be anything)
-	 * @return void
+	 * @return Session
 	 */
-	public function set(string $name, mixed $value): void
+	public function set(string $name, mixed $value): Session
 	{
 		$this->checkValidSessionEntryKey($name);
 		$this->restartSession();
 		$_SESSION[$name] = $value;
 		$this->closeSessionCall();
+		return $this;
 	}
 
 	/**
@@ -577,16 +579,17 @@ class Session
 	 * unset one _SESSION entry 'name' if exists
 	 *
 	 * @param  string $name _SESSION key name to remove
-	 * @return void
+	 * @return Session
 	 */
-	public function unset(string $name): void
+	public function unset(string $name): Session
 	{
 		if (!isset($_SESSION[$name])) {
-			return;
+			return $this;
 		}
 		$this->restartSession();
 		unset($_SESSION[$name]);
 		$this->closeSessionCall();
+		return $this;
 	}
 
 	/**

www/lib/CoreLibs/Security/AsymmetricAnonymousEncryption.php

@@ -256,13 +256,13 @@ class AsymmetricAnonymousEncryption
 	 * sets the private key for encryption
 	 *
 	 * @param  string $key_pair Key pair in hex
-	 * @return void
+	 * @return AsymmetricAnonymousEncryption
 	 * @throws \UnexpectedValueException key pair empty
 	 */
 	public function setKeyPair(
 		#[\SensitiveParameter]
 		string $key_pair
-	) {
+	): AsymmetricAnonymousEncryption {
 		if (empty($key_pair)) {
 			throw new \UnexpectedValueException('Key pair cannot be empty');
 		}
@@ -277,6 +277,7 @@ class AsymmetricAnonymousEncryption
 			// check if valid
 			$this->createPublicKey($this->public_key);
 		}
+		return $this;
 	}
 
 	/**
@@ -308,10 +309,10 @@ class AsymmetricAnonymousEncryption
 	 * extract the public key from the key pair
 	 *
 	 * @param  string $public_key Public Key in hex
-	 * @return void
+	 * @return AsymmetricAnonymousEncryption
 	 * @throws \UnexpectedValueException public key empty
 	 */
-	public function setPublicKey(string $public_key)
+	public function setPublicKey(string $public_key): AsymmetricAnonymousEncryption
 	{
 		if (empty($public_key)) {
 			throw new \UnexpectedValueException('Public key cannot be empty');
@@ -320,6 +321,7 @@ class AsymmetricAnonymousEncryption
 		$this->createPublicKey($public_key);
 		$this->public_key = $public_key;
 		sodium_memzero($public_key);
+		return $this;
 	}
 
 	/**

www/lib/CoreLibs/Security/SymmetricEncryption.php

@@ -209,13 +209,13 @@ class SymmetricEncryption
 	 * set a new key for encryption
 	 *
 	 * @param  string $key
-	 * @return void
+	 * @return SymmetricEncryption
 	 * @throws \UnexpectedValueException key cannot be empty
 	 */
 	public function setKey(
 		#[\SensitiveParameter]
 		string $key
-	) {
+	): SymmetricEncryption {
 		if (empty($key)) {
 			throw new \UnexpectedValueException('Key cannot be empty');
 		}
@@ -224,6 +224,7 @@ class SymmetricEncryption
 		// set key
 		$this->key = $key;
 		sodium_memzero($key);
+		return $this;
 	}
 
 	/**