type BatchJobSnowball struct {
	line, col   int
	Disable     *bool   `yaml:"disable" json:"disable"`
	Batch       *int    `yaml:"batch" json:"batch"`
	InMemory    *bool   `yaml:"inmemory" json:"inmemory"`
	Compress    *bool   `yaml:"compress" json:"compress"`
	SmallerThan *string `yaml:"smallerThan" json:"smallerThan"`
	SkipErrs    *bool   `yaml:"skipErrs" json:"skipErrs"`
}

    snowball: # automatically activated if the source is local
      disable: true # optionally turn-off snowball archive transfer
#      batch: 100 # upto this many objects per archive
#      inmemory: true # indicates if the archive must be staged locally or in-memory
#      compress: false # S2/Snappy compressed archive
#      smallerThan: 5MiB # create archive for all objects smaller than 5MiB