How to use the st/events.trigger function in st

onClick={e => {
          trigger(this, "showLightbox",
            )
        }}
        type="button" className="outline">More...

close() {
    if (!this.canClose()) { return }
    trigger(this, "lightboxClosed")
    if (this.props.onClose) {
      this.props.onClose(this)
    }
  }

pickMidi={() => {
        trigger(this, "pickMidi")
      }} />
  }

openStatsLightbox() {
    trigger(this, "showLightbox",
       this.setState({stats: new NoteStats()})}
        stats={this.state.stats} />)
  }

savePreset(e) {
    e.preventDefault()
    trigger(this, "saveGeneratorPreset", this.refs.presetForm)
  }

    this.setMinChordSpacing = (value) => trigger(this, "setMinChordSpacing", value)
    this.setAutochordsRate = (value) => trigger(this, "setAutochordsRate", value)

    this.setAutochordsRate = (value) => trigger(this, "setAutochordsRate", value)
  }

pickMidi={() => {
          trigger(this, "pickMidi")
        }} />

        onClick={(e) => trigger(this, "setAutochords", idx)}
        className={classNames("toggle_option", {