private static bool InternalEquals(EntityKey key1, EntityKey key2)
        {
            if (object.ReferenceEquals(key1, key2))
            {
                return true;
            }
            if (object.ReferenceEquals(key1, null) || object.ReferenceEquals(key2, null))
            {
                return false;
            }
            if (key1.RequiresDeserialization)
            {
                key1.DeserializeMembers();
            }
            else if (key2.RequiresDeserialization)
            {
                key2.DeserializeMembers();
            }
            if (key1._singletonKeyValue != null)
            {
                if (!key1._singletonKeyValue.Equals(key2._singletonKeyValue) || !string.Equals(key1._keyNames[0], key2._keyNames[0]) || !string.Equals(key1._entityContainerName, key2._entityContainerName))
                {
                    return false;
                }
                return string.Equals(key1._entitySetName, key2._entitySetName);
            }
            if (key1._compositeKeyValues == null || key2._compositeKeyValues == null || !string.Equals(key1._entityContainerName, key2._entityContainerName) || !string.Equals(key1._entitySetName, key2._entitySetName) || (int)key1._compositeKeyValues.Length != (int)key2._compositeKeyValues.Length)
            {
                return false;
            }
            return EntityKey.ComplexKeyValuesEqual(key1, key2);
        }