}
        JApiMethod jApiMethod = (JApiMethod) jApiCompatibility;
        Map<AccessorKey, ReplacedAccessor> oldMethods = context.getUserData(OLD_ACCESSORS_OF_UPGRADED_PROPERTIES);
        AccessorKey key = AccessorKey.ofOldMethod(jApiMethod);
        return oldMethods.containsKey(key) ? Optional.of(key) : Optional.empty();
    }

            JApiMethod method = (JApiMethod) member
            CtMethod oldMethod = method.oldMethod.get()
            CtMethod newMethod = method.newMethod.get()

            inspectParametersNullabilityOf(oldMethod, newMethod)

            def oldNullability = hasNullableAnnotation(oldMethod)
            def newNullability = hasNullableAnnotation(newMethod)

            String containingType = jApiMethod.getjApiClass().getFullyQualifiedName();
            return new AccessorKey(containingType, name, descriptor);
        }

        public static AccessorKey ofOldMethod(JApiMethod jApiMethod) {
            String name = jApiMethod.getName();
            String descriptor = jApiMethod.getOldMethod().get().getSignature();

      return new BadEquals();
    }

    // primitive ignored
    public int returnsInt() {
      throw new UnsupportedOperationException();
    }

    // void ignored
    public void voidMethod() {
      throw new UnsupportedOperationException();
    }

    // non-public method ignored
    static Object badButNotPublic() {
      return new BadEquals();
    }
  }