Add example for querying with predicates

const searchTrash = (searchText) => {
  return new Promise(((resolve, reject) => {
  nx.repository()
    .query({
      pageProvider: "default_trash_search",
      ecm_fulltext: searchText
    })
    .then((res) => resolve(res))
    .catch((err) => reject(new Error(err)))
  }))
};