public async Task <IActionResult> ListElementDefinitionsAsync(Guid elementTypeId, [FromQuery] string elementIds) { IEnumerable <long> elementIdCollection = !string.IsNullOrWhiteSpace(elementIds) ? elementIds.Split(',').Select(long.Parse) : null; IEnumerable <ElementDefinition> elementDefinitions = await _elementService.ListElementDefinitionsAsync(TenantId, elementTypeId, elementIdCollection); return(Ok(elementDefinitions)); }