src/java.base/share/classes/sun/reflect/LangReflectAccess.java

@@ -107,6 +107,16 @@
     /** Makes a "child" copy of a Field */
     public Field       copyField(Field arg);
 
     /** Makes a "child" copy of a Constructor */
     public <T> Constructor<T> copyConstructor(Constructor<T> arg);
+
+    //
+    // Comparing / Hashing Method parameter types
+    //
+
+    /** Compares parameter types of two Methods */
+    public boolean methodParameterTypesEquals(Method method1, Method method2);
+
+    /** Returns hashCode for parameter types of a Method */
+    public int methodParameterTypesHashCode(Method method);
 }