Get a user by name or identifier.
See also
Other users functions:
amber.groups()
,
amber.user()
,
amber.users()
Examples
if (FALSE) { # \dontrun{
a <- amber.login("https://amber-demo.obiba.org")
amber.group(a, id = "obiba.org")
amber.group(a, id = "615abb061799dd6a2cdbbb10")
amber.logout(a)
} # }