Create/Write Disposition support

[pvillard31]

Hi team,

I'm switching over to the BQ Storage API and I'm trying to figure out if there is way to do the same as with the legacy API for Create/Write Disposition:

    JobInfo.CreateDisposition.CREATE_IF_NEEDED // Configures the job to create the table if it does not exist
    JobInfo.CreateDisposition.CREATE_NEVER // Configures the job to fail with a not-found error if the table does not exist

    JobInfo.WriteDisposition.WRITE_EMPTY // Configures the job to fail with a duplicate error if the table already exists
    JobInfo.WriteDisposition.WRITE_APPEND // Configures the job to append data to the table if it already exists
    JobInfo.WriteDisposition.WRITE_TRUNCATE // Configures the job to overwrite the table data if table already exists

In particular, having the option to have the table automatically created if it does not exist. And the option to truncate any existing data (this is useful when using the new API in a batch mode).

Appreciate any hints on this!