Tries to get the UNIX user identifier from credentials. This
method is only available on UNIX platforms.
This operation can fail if #GCredentials is not supported on the
OS or if the native credentials type does not contain information
about the UNIX user.
Tries to get the UNIX user identifier from credentials. This method is only available on UNIX platforms.
This operation can fail if #GCredentials is not supported on the OS or if the native credentials type does not contain information about the UNIX user.