Javascript lodash method definition

I am looking for an explanation of this code I see in st2web:

  get urlParams() {
    const {
      ref = get('groups[0].inquiries[0].id', this.props),
      section = 'general',
    } = this.props.match.params;
    const {
      page,
    } = parseSearch(get('location.search', this.props));

    return {
      id: ref,
      section,
      page,
    };
  }

specifically the get urlParams() declaration.
The file is located here:

@guzzijones I’d ask this in the #community channel on slack