diff --git a/src/main/resources/japicmp/api-report.groovy b/src/main/resources/japicmp/api-report.groovy
new file mode 100644
index 0000000..47f4411
--- /dev/null
+++ b/src/main/resources/japicmp/api-report.groovy
@@ -0,0 +1,30 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+  def it = jApiClasses.iterator()
+  while (it.hasNext()) {
+    def jApiClass = it.next()
+    def fqn = jApiClass.getFullyQualifiedName()
+    if (fqn.contains(".impl.") || 
+        fqn.contains(".internal.") ||
+        fqn.endsWith("_Type") 
+       ) {
+      it.remove()
+    }
+  }  
+  return jApiClasses
\ No newline at end of file