Document log4j-api changes in version 2.20.0

Author: ppkarwasz

log4j-api/src/main/java/org/apache/logging/log4j/LogBuilder.java

@@ -112,7 +112,7 @@ default void log(final Supplier<Message> messageSupplier) {}
      *
      * @param messageSupplier The supplier of the message to log.
      * @return the message logger or {@code null} if no logging occurred.
-     * @since 2.20
+     * @since 2.20.0
      */
     default Message logAndGet(final Supplier<Message> messageSupplier) {
         return null;

log4j-api/src/main/java/org/apache/logging/log4j/Logger.java

@@ -1971,7 +1971,7 @@ void fatal(
      * Gets the flow message factory used to convert messages into flow messages.
      *
      * @return the flow message factory, as an instance of {@link FlowMessageFactory}.
-     * @since 2.20
+     * @since 2.20.0
      */
     FlowMessageFactory getFlowMessageFactory();
 

log4j-api/src/main/java/org/apache/logging/log4j/ThreadContext.java

@@ -214,6 +214,8 @@ private ThreadContext() {
 
     /**
      * <em>Consider private, used for testing.</em>
+     *
+     * @since 2.20.0
      */
     public static void init() {
         final PropertiesUtil properties = PropertiesUtil.getProperties();

log4j-api/src/main/java/org/apache/logging/log4j/message/FlowMessageFactory.java

@@ -28,7 +28,7 @@ public interface FlowMessageFactory {
      * @param message format string
      * @param params  parameters
      * @return the new entry message
-     * @since 2.20
+     * @since 2.20.0
      */
     EntryMessage newEntryMessage(String message, Object... params);
 
@@ -46,7 +46,7 @@ public interface FlowMessageFactory {
      * @param format a format string
      * @param result the return value
      * @return the new exit message
-     * @since 2.20
+     * @since 2.20.0
      */
     ExitMessage newExitMessage(String format, Object result);
 
@@ -55,7 +55,7 @@ public interface FlowMessageFactory {
      *
      * @param message the original entry message
      * @return the new exit message
-     * @since 2.20
+     * @since 2.20.0
      */
     ExitMessage newExitMessage(Message message);
 

log4j-api/src/main/java/org/apache/logging/log4j/util/SystemPropertiesPropertySource.java

@@ -49,6 +49,9 @@ public static PropertySource provider() {
         return INSTANCE;
     }
 
+    /**
+     * @since 2.20.0
+     */
     public static String getSystemProperty(final String key, final String defaultValue) {
         final String value = INSTANCE.getProperty(key);
         return value != null ? value : defaultValue;