Extract documentation examples from tests

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

Co-authored-by: Moderne <team@moderne.io>

Author: timtebeek

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

@@ -392,6 +392,73 @@ examples:
     language: java
 ---
 type: specs.openrewrite.org/v1beta/example
+recipeName: org.openrewrite.java.recipes.RemoveImportBeforeAddImport
+examples:
+- description: '`RemoveImportBeforeAddImportTest#swapMaybeAddBeforeMaybeRemove`'
+  sources:
+  - before: |
+      import org.openrewrite.ExecutionContext;
+      import org.openrewrite.Recipe;
+      import org.openrewrite.TreeVisitor;
+      import org.openrewrite.java.JavaIsoVisitor;
+      import org.openrewrite.java.tree.J;
+
+      public class SampleRecipe extends Recipe {
+          @Override
+          public String getDisplayName() {
+              return "Sample";
+          }
+
+          @Override
+          public String getDescription() {
+              return "Sample recipe.";
+          }
+
+          @Override
+          public TreeVisitor<?, ExecutionContext> getVisitor() {
+              return new JavaIsoVisitor<ExecutionContext>() {
+                  @Override
+                  public J.MethodInvocation visitMethodInvocation(J.MethodInvocation method, ExecutionContext ctx) {
+                      maybeAddImport("com.example.NewClass");
+                      maybeRemoveImport("com.example.OldClass");
+                      return super.visitMethodInvocation(method, ctx);
+                  }
+              };
+          }
+      }
+    after: |
+      import org.openrewrite.ExecutionContext;
+      import org.openrewrite.Recipe;
+      import org.openrewrite.TreeVisitor;
+      import org.openrewrite.java.JavaIsoVisitor;
+      import org.openrewrite.java.tree.J;
+
+      public class SampleRecipe extends Recipe {
+          @Override
+          public String getDisplayName() {
+              return "Sample";
+          }
+
+          @Override
+          public String getDescription() {
+              return "Sample recipe.";
+          }
+
+          @Override
+          public TreeVisitor<?, ExecutionContext> getVisitor() {
+              return new JavaIsoVisitor<ExecutionContext>() {
+                  @Override
+                  public J.MethodInvocation visitMethodInvocation(J.MethodInvocation method, ExecutionContext ctx) {
+                      maybeRemoveImport("com.example.OldClass");
+                      maybeAddImport("com.example.NewClass");
+                      return super.visitMethodInvocation(method, ctx);
+                  }
+              };
+          }
+      }
+    language: java
+---
+type: specs.openrewrite.org/v1beta/example
 recipeName: org.openrewrite.java.recipes.ReorderTestMethods
 examples:
 - description: '`ReorderTestMethodsTest#reorderTestMethods`'