message: WebFlow: Expose 'setCssStyle()' on FlowDocument
diff: @@ -348,6 +348,10 @@ export class FlowDocument extends PrimedComponent {
  this.sharedString.annotateRange(start, end, props);
  }
  + public setCssStyle(start: number, end: number, style: string) {
  + this.sharedString.annotateRange(start, end, { style });
  + }
  +
  public addCssClass(start: number, end: number, ...classNames: string[]) {
  if (classNames.length > 0) {
  const newClasses = classNames.join(" ");
  