OpenRewrite recipe best practices (#860)

Use this link to re-run the recipe: https://app.moderne.io/recipes/org.openrewrite.recipes.rewrite.OpenRewriteRecipeBestPractices?organizationId=QUxML09wZW4gU291cmNlL09wZW5SZXdyaXRl

Co-authored-by: Moderne <[email protected]>

Author: timtebeek

src/main/java/org/openrewrite/java/migrate/search/FindInternalJavaxApis.java

@@ -29,8 +29,6 @@
 import org.openrewrite.java.tree.TypeUtils;
 import org.openrewrite.marker.SearchResult;
 
-import java.util.regex.Pattern;
-
 import static java.util.stream.Collectors.joining;
 
 @EqualsAndHashCode(callSuper = false)

src/main/resources/META-INF/rewrite/examples.yml

@@ -6034,6 +6034,25 @@ examples:
     language: java
 ---
 type: specs.openrewrite.org/v1beta/example
+recipeName: org.openrewrite.java.migrate.lang.MigrateMainMethodToInstanceMain
+examples:
+- description: ''
+  sources:
+  - before: |
+      class Application {
+          public static void main(String[] args) {
+              System.out.println("Hello, World!");
+          }
+      }
+    after: |
+      class Application {
+          void main() {
+              System.out.println("Hello, World!");
+          }
+      }
+    language: java
+---
+type: specs.openrewrite.org/v1beta/example
 recipeName: org.openrewrite.java.migrate.lang.MigrateProcessWaitForDuration
 examples:
 - description: ''