Rock.Model.PageService.GenerateBlockAttributeValues C# (CSharp) Méthode

        private void GenerateBlockAttributeValues( Dictionary<Guid, Guid> pageGuidDictionary, Dictionary<Guid, Guid> blockGuidDictionary, RockContext rockContext, int? currentPersonAliasId = null )
        {
            var attributeValueService = new AttributeValueService( rockContext );
            var pageService = new PageService( rockContext );
            var blockService = new BlockService( rockContext );
            var pageGuid = Rock.SystemGuid.EntityType.PAGE.AsGuid();
            var blockGuid = Rock.SystemGuid.EntityType.BLOCK.AsGuid();

            Dictionary<Guid, int> blockIntDictionary = blockService.Queryable()
                .Where( p => blockGuidDictionary.Keys.Contains( p.Guid ) || blockGuidDictionary.Values.Contains( p.Guid ) )
                .ToDictionary( p => p.Guid, p => p.Id );

            var attributeValues = attributeValueService.Queryable().Where( a =>
                a.Attribute.EntityType.Guid == blockGuid && blockIntDictionary.Values.Contains( a.EntityId.Value ) )
                .ToList();

            foreach ( var attributeValue in attributeValues )
            {
                var newAttributeValue = attributeValue.Clone( false );
                newAttributeValue.CreatedByPersonAlias = null;
                newAttributeValue.CreatedByPersonAliasId = currentPersonAliasId;
                newAttributeValue.CreatedDateTime = RockDateTime.Now;
                newAttributeValue.ModifiedByPersonAlias = null;
                newAttributeValue.ModifiedByPersonAliasId = currentPersonAliasId;
                newAttributeValue.ModifiedDateTime = RockDateTime.Now;
                newAttributeValue.Id = 0;
                newAttributeValue.Guid = Guid.NewGuid();
                newAttributeValue.EntityId = blockIntDictionary[blockGuidDictionary[blockIntDictionary.Where( d => d.Value == attributeValue.EntityId.Value ).FirstOrDefault().Key]];

                if ( attributeValue.Attribute.FieldType.Guid == Rock.SystemGuid.FieldType.PAGE_REFERENCE.AsGuid() )
                {
                    if ( pageGuidDictionary.ContainsKey( attributeValue.Value.AsGuid() ) )
                    {
                        newAttributeValue.Value = pageGuidDictionary[attributeValue.Value.AsGuid()].ToString();
                    }
                }

                attributeValueService.Add( newAttributeValue );
            }

            rockContext.SaveChanges();
        }