code: func NewMain() *Main {
  	return &Main{
  		Bucket:      "pdk-test-bucket",
  		Region:      "us-east-1",
  		PilosaHosts: []string{"localhost:10101"},
  		Index:       "pdk",
  		BatchSize:   1000,
  		SubjectAt:   "#@!pdksubj",
  		SubjectPath: []string{},
  		Proxy:       ":13131",
  	}
  }
docs: // NewMain gets a new Main with the default configuration.