_read.js

_read() {
    // // List all xml tags that have more than one child.
    this.xmlStream.collect('title');

    // // catch error
    // this.xmlStream.on('error', console.log);

    this.xmlStream.on(`updateElement: ${this.elementToExtract}`, (updateElement) => {
      this.push(updateElement);
    });
  }