How to use the megadraft.MegadraftIcons.EditIcon function in megadraft

constructor(props) {
    super(props);

    this._handleEdit = ::this._handleEdit;
    this._onModalClose = ::this._onModalClose;
    this._onSave = ::this._onSave;

    this.state = {
      isEditing: false
    };

    this.actions = [
      {"key": "edit", "icon": MegadraftIcons.EditIcon, "action": this._handleEdit},
      {"key": "delete", "icon": MegadraftIcons.DeleteIcon, "action": this.props.container.remove}
    ];
  }

constructor(props) {
    super(props);

    this._handleCaptionChange = ::this._handleCaptionChange;
    this._handleEdit = ::this._handleEdit;

    this.actions = [
      { key: "edit", icon: MegadraftIcons.EditIcon, action: this._handleEdit },
      {
        key: "delete",
        icon: MegadraftIcons.DeleteIcon,
        action: this.props.container.remove,
      },
    ];
  }