ide credentials for write operations in DataONE.
The authentication token is obtained from DataONE (see your profile on https://search.dataone.org).
See the <code>vignette("dataone-overview")</code> for details.
Alternatively, the version 1.0 approach of using an X.509 certificate in a default location of the file 
system can also be used. This certificate provides authentication credentials from 
CILogon <a href='https://cilogon.org/?skin=DataONE'>https://cilogon.org/?skin=DataONE</a>.  See <code>vignette(