question: get the optional noteid that this note is a reply to . concode_field_sep NoteType noteType concode_elem_sep Optional<NoteId> replyToId concode_elem_sep UserId author concode_elem_sep Optional<String> subject concode_elem_sep NoteHeader header concode_elem_sep NoteId noteId concode_elem_sep String body concode_elem_sep NoteContent content concode_elem_sep long timestamp concode_field_sep String getSubject concode_elem_sep void setSubject concode_elem_sep UserId getAuthor concode_elem_sep String getBody concode_elem_sep NoteContent getContent concode_elem_sep void setBody concode_elem_sep Note createComment concode_elem_sep NoteHeader getHeader concode_elem_sep Note build concode_elem_sep long getTimestamp concode_elem_sep int hashCode concode_elem_sep Note createNote concode_elem_sep Note createNote concode_elem_sep boolean equals concode_elem_sep void setInReplyTo concode_elem_sep NoteId getNoteId concode_elem_sep void setNoteType
target: Optional < NoteId > function ( ) { return header . getReplyToId ( ) ; }