Fix Javadoc generation issues

common/src/main/java/de/staropensource/sosengine/minecraft/EngineBootstrapper.java

@@ -42,9 +42,19 @@ public final class EngineBootstrapper {
      */
     private static final LoggerInstance logger = new LoggerInstance.Builder().setClazz(EngineBootstrapper.class).setOrigin("ENGINEMC").build();
 
+    /**
+     * Constructs this class.
+     *
+     * @since v1-alpha0
+     */
+    public EngineBootstrapper() {}
+
     /**
      * Initializes the engine and environment.
      *
+     * @param disableMultithreading disables multithreading support (except for logging), if enabled
+     * @param shutdownHandler       {@link ShutdownHandler} implementation, which should ideally shutdown the server
+     * @param loggingAdapter        {@link LoggingAdapter} implementation, for printing log messages into the server console
      * @since v1-alpha0
      */
     public static void initialize(boolean disableMultithreading, @NotNull ShutdownHandler shutdownHandler, @NotNull LoggingAdapter loggingAdapter) {

common/src/main/java/de/staropensource/sosengine/minecraft/MinecraftSubsystem.java

@@ -32,16 +32,26 @@ import org.jetbrains.annotations.NotNull;
  */
 @EngineSubsystem
 public final class MinecraftSubsystem extends SubsystemClass {
+    /**
+     * Constructs this class.
+     *
+     * @since v1-alpha0
+     */
+    public MinecraftSubsystem() {}
+
+    /** {@inheritDoc} */
     @Override
     public @NotNull String getName() {
         return "minecraft";
     }
 
+    /** {@inheritDoc} */
     @Override
     public void initializeSubsystem() {
         SubsystemInformation.update();
     }
 
+    /** {@inheritDoc} */
     @Override
     public @NotNull DependencyVector getDependencyVector() throws IllegalStateException {
         if (SubsystemInformation.getVersioningString() == null)

common/src/main/java/de/staropensource/sosengine/minecraft/command/Command.java

@@ -36,6 +36,13 @@ import java.util.concurrent.TimeUnit;
  * @since v1-alpha0
  */
 public class Command {
+    /**
+     * Constructs this class.
+     *
+     * @since v1-alpha0
+     */
+    public Command() {}
+
     /**
      * Executes the command.
      *

common/src/main/java/de/staropensource/sosengine/minecraft/command/Player.java

@@ -39,6 +39,7 @@ public abstract class Player {
     /**
      * Sends a message to the player.
      *
+     * @param message message to send
      * @since v1-alpha0
      */
     public abstract void message(@NotNull Component message);

platform-bukkit/src/main/java/de/staropensource/sosengine/minecraft/bukkit/BukkitLoggingAdapter.java

@@ -30,6 +30,13 @@ import org.jetbrains.annotations.Nullable;
  * A {@link LoggingAdapter} for the Bukkit API.
  */
 public class BukkitLoggingAdapter implements LoggingAdapter {
+    /**
+     * Constructs this class.
+     *
+     * @since v1-alpha0
+     */
+    public BukkitLoggingAdapter() {}
+
     /** {@inheritDoc} */
     @Override
     public @Nullable String prePlaceholder(@NotNull LogLevel level, @NotNull Class<?> issuerClass, @NotNull String issuerOrigin, @Nullable String issuerMetadata, @NotNull String message, @NotNull String format) {

platform-bukkit/src/main/java/de/staropensource/sosengine/minecraft/bukkit/command/BukkitCommand.java

@@ -30,6 +30,13 @@ import org.jetbrains.annotations.NotNull;
  * @since v1-alpha0
  */
 public class BukkitCommand implements CommandExecutor {
+    /**
+     * Constructs this class.
+     *
+     * @since v1-alpha0
+     */
+    public BukkitCommand() {}
+
     /** {@inheritDoc} */
     @Override
     public boolean onCommand(@NotNull CommandSender sender, @NotNull org.bukkit.command.Command command, @NotNull String alias, @NotNull String[] arguments) {