Close connection and release resources of Amber.
Examples
if (FALSE) { # \dontrun{
a <- amber.login("https://amber-demo.obiba.org")
amber.logout(a)
} # }
Close connection and release resources of Amber.
if (FALSE) { # \dontrun{
a <- amber.login("https://amber-demo.obiba.org")
amber.logout(a)
} # }