Add warning to auto generated LaF classes.

annotations-processor/src/main/java/com/github/weisj/darklaf/annotations/processor/SynthesiseLafProcessor.java

@@ -38,6 +38,9 @@ import javax.tools.JavaFileObject;
 
 import com.github.weisj.darklaf.annotations.SynthesiseLaf;
 
+/**
+ * @deprecated Auto-Generated class. Use LafManager.installTheme(Theme) instead.
+ */
 @SupportedAnnotationTypes("com.github.weisj.darklaf.annotations.SynthesiseLaf")
 public class SynthesiseLafProcessor extends AbstractProcessor {
 
@@ -57,11 +60,18 @@ public class SynthesiseLafProcessor extends AbstractProcessor {
             String synthesisedName = packageName + "." + synthesisedClassName;
 
             StringBuilder builder = new StringBuilder();
-            builder.append("package ").append(packageName).append(";\n\n").append("import ").append(themePath)
-                    .append(";\n\n").append("public class ").append(synthesisedClassName).append(" extends ")
-                    .append(baseClassName).append(" {\n\n").append(IDENT).append("public ").append(synthesisedClassName)
-                    .append("() {\n").append(IDENT).append(IDENT).append("super(new ").append(themeName)
-                    .append("());\n").append(IDENT).append("}\n").append("}");
+            builder.append("package ").append(packageName).append(";\n\n");
+
+            builder.append("import ").append(themePath).append(";\n\n");
+            builder.append("/**\n");
+            builder.append(" * @deprecated Auto-Generated class. Use LafManager.installTheme(Theme) instead.\n");
+            builder.append(" */\n");
+            builder.append("@Deprecated\n");
+            builder.append("public class ").append(synthesisedClassName).append(" extends ").append(baseClassName);
+            builder.append(" {\n\n");
+            builder.append(IDENT).append("public ").append(synthesisedClassName).append("() {\n");
+            builder.append(IDENT).append(IDENT).append("super(new ").append(themeName).append("());\n");
+            builder.append(IDENT).append("}\n").append("}");
 
             try {
                 JavaFileObject javaFileObject = processingEnv.getFiler().createSourceFile(synthesisedName, typeElement);