=== invoke with 2 args, long pw ===
PAM_PROMPT_ECHO_OFF Password: 
polkit-agent-helper-1: pam_authenticated failed: Authentication failure
FAILURE
rc=1
=== invoke with 3 args ===
polkit-agent-helper-1: wrong number of arguments. This incident has been logged.
FAILURE
rc2=1
=== invoke with 4 args ===
polkit-agent-helper-1: wrong number of arguments. This incident has been logged.
FAILURE
rc3=1