Ignore the signature-polymorphic MethodHandle.invokeExact in animal-sniffer

javac records the ad-hoc call-site descriptor for invokeExact, which no
signature database lists, so the JDK 8 check flags a false positive on
every MethodHandle lookup call site.

Assisted-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ErRKq7RUeQ9LGrSboSUyYm

Author: ppkarwasz

pom.xml

@@ -130,6 +130,18 @@ limitations under the License.
             </rulesets>
           </configuration>
         </plugin>
+        <plugin>
+          <groupId>org.codehaus.mojo</groupId>
+          <artifactId>animal-sniffer-maven-plugin</artifactId>
+          <configuration>
+            <ignores>
+              <!-- MethodHandle.invokeExact is signature-polymorphic: javac records the ad-hoc call-site descriptor, which no signature
+                   database lists, so the checker flags a false positive. The method itself exists on every supported runtime (Java 7+);
+                   absent *looked-up* methods are handled at runtime by findStatic returning null. -->
+              <ignore>java.lang.invoke.MethodHandle</ignore>
+            </ignores>
+          </configuration>
+        </plugin>
       </plugins>
     </pluginManagement>
     <plugins>