private bool HandleErrorsMarked(ICollection <ValidationError> errors, ValidationReason reason)
        {
            if (this.ErrorsMarked != null)
            {
                ErrorsMarkedEventArgs arg = new ErrorsMarkedEventArgs(errors, reason, this.modelTreeManager, this.context);
                this.ErrorsMarked(this, arg);
                return(arg.Handled);
            }

            return(false);
        }
        private bool HandleErrorsMarked(ICollection<ValidationError> errors, ValidationReason reason)
        {
            if (this.ErrorsMarked != null)
            {
                ErrorsMarkedEventArgs arg = new ErrorsMarkedEventArgs(errors, reason, this.modelTreeManager, this.context);
                this.ErrorsMarked(this, arg);
                return arg.Handled;
            }

            return false;
        }