Add @SInCE tags

Author: MatKuhr

cloudplatform/connectivity-oauth/pom.xml

@@ -48,7 +48,9 @@
 		<dependency>
 			<groupId>com.sap.cloud.sdk.cloudplatform</groupId>
 			<artifactId>connectivity-ztis</artifactId>
-			<!-- ztis brings some dependencies we don't want for applications that don't need it -->
+			<!-- connectivity-ztis brings some dependencies we don't want for applications that don't need it.
+			 Setting this to optional means ztis won't come transitively when including oauth.
+			 Users will have to include ztis manually. -->
 			<optional>true</optional>
 		</dependency>
 		<dependency>

cloudplatform/connectivity-ztis/src/main/java/com/sap/cloud/sdk/cloudplatform/connectivity/ZeroTrustIdentityService.java

@@ -40,6 +40,8 @@
 
 /**
  * Implementation to access X.509 certificates provided by the Zero Trust Identity Service (ZTIS).
+ *
+ * @since 5.7.0
  */
 @Beta
 @Slf4j
@@ -137,6 +139,7 @@ X509Svid getX509Svid()
      * equivalent to calling {@link #getX509Svid()} with {@link X509Svid#getSpiffeId()}.
      *
      * @return The SPIFFE ID.
+     * @since 5.7.0
      */
     @Nonnull
     public String getSpiffeId()
@@ -148,6 +151,7 @@ public String getSpiffeId()
      * Returns the app identifier assigned to the app via the Zero Trust Identity service binding.
      *
      * @return The app identifier.
+     * @since 5.7.0
      */
     @Nonnull
     public Option<String> getAppIdentifier()
@@ -167,6 +171,7 @@ public Option<String> getAppIdentifier()
      * KeyStore is cached and will be reloaded if the certificate expires.
      *
      * @return a KeyStore containing the X.509 certificate and key.
+     * @since 5.7.0
      */
     @Nonnull
     public KeyStore getOrCreateKeyStore()