public async Task <IHttpActionResult> PostMasterAsync(string portalUri, string pageUri, [FromBody] string uri, CancellationToken cancellationToken) { var portal = await _portalManager.FindByUriAsync(portalUri, cancellationToken); await ApiSecurity.AuthorizeAsync(portal, AccessPermission.CanEdit, cancellationToken); var page = await _portalManager.GetPageByUriAsync(portal, pageUri, cancellationToken); if (page == null) { return(NotFound()); } var validationResult = await _portalManager.SetPageMasterAsync(portal, page, uri, cancellationToken); if (!validationResult.Succeeded) { return(this.ValidationContent(validationResult)); } return(Ok(ModelMapper.ToPageDto(page))); }