src/java.base/share/classes/java/lang/reflect/ReflectAccess.java

@@ -145,6 +145,17 @@
     }
 
     public <T> Constructor<T> copyConstructor(Constructor<T> arg) {
         return arg.copy();
     }
+
+    //
+    // Comparing / Hashing Method parameter types
+    //
+    public boolean methodParameterTypesEquals(Method method1, Method method2) {
+        return method1.parameterTypesEquals(method2);
+    }
+
+    public int methodParameterTypesHashCode(Method method) {
+        return method.parameterTypesHashCode();
+    }
 }