static async addPerson() {
    try {
      const datastore = Datastore({
        projectId: projectId
      });
      const key = datastore.key('person');
      const person = {
        key: key,
        data: 
          [
            { name: 'last_name', value: 'Wright' },
			{ name: 'last_name_UPPER', value: 'WRIGHT' },
            { name: 'first_name', value: 'Richard' },
			{ name: 'first_name_UPPER', value: 'RICHARD' },
			{ name: 'email', value: 'mygmail@gmail.com' },
            { name: 'address_street', value: 'My Place', excludeFromIndexes: true },
            { name: 'address_city', value: 'City' },
            { name: 'address_state', value: 'State' },
            { name: 'address_zip', value: '12345' },
            { name: 'phone', value: '123.456.7890' },
            { name: 'date_of_birth', value: new Date(1901, 02, 03)},
            { name: 'create_time', value: new Date(Date.now()), excludeFromIndexes: true }
          ]
      };
      
      let saveResponse = await datastore.save(person);
      
      let person_id=saveResponse[0].mutationResults[0].key.path[0].id;
      return person_id;
    } catch (err) {
      console.log(err);
      return;
    }
  }