message: Add example to positionAt
diff: @@ -160,6 +160,12 @@ export interface TextDocument {
  *
  * @param offset A zero-based offset.
  * @return A valid [position](#Position).
  + * @example The text document "ab\ncd" produces:
  + * * position { line: 0, character: 0 } for `offset` 0.
  + * * position { line: 0, character: 1 } for `offset` 1.
  + * * position { line: 0, character: 2 } for `offset` 2.
  + * * position { line: 1, character: 0 } for `offset` 3.
  + * * position { line: 1, character: 1 } for `offset` 4.
  */
  positionAt(offset: number): Position;
  