Post Direct Ephemeral Message

slack = pcore.getPlugin('Slack')

slack.get_access_token()
project = get_current_project()
channel_id = slack.get_channel_id(access_token, project)
channel_users = slack.get_channel_users(access_token, channel_id)

prism_user = slack.get_prism_slack_username()
slack_recipient = slack.get_slack_user_id(prism_user, channel_users)

message = "Hey Slack User!"

slack.post_channel_ephemeral_message(access_token, slack_recipient, message)