docs: function (project) {
    assert(project.id !== undefined, 'expected project.id to be defined')
    assert(project.gcloud !== undefined, 'expected project.gcloud to be defined')
  
    this.project = project
    this.gcloud = project.gcloud
    this.collection = collection('deployment', this.gcloud,
      ['deployment-manager', 'deployments'],
      '--project=' + this.project.id)
  }