Method setLine

external/.scrollLibs.js:17100–17107

(line)

    return this.setAtom(0, cue)
  }
  setLine(line) {
    if (line === this.getLine()) return this
    // todo: clear parent TMTimes
    this.parent._clearCueIndex()
    this._setLine(line)
    this._updateLineModifiedTimeAndTriggerEvent()
    return this
  }
  duplicate() {
    return this.parent._insertBlock(this.toString(), this.index + 1)
  }