title: How to print plugin vars in declarative pipeline?
body: <p>How can I print plugin variables in declarative pipeline?
  I am trying to print vars for "Bitbucket Branch Source plugin" as mention <a href="https://mohamicorp.atlassian.net/wiki/spaces/DOC/pages/931201025/Environment+variables+for+Bitbucket+Branch+Source+plugin" rel="nofollow noreferrer">here</a>!. I am using multibranch pipeline and sh 'printenv' - it doesn't print vars of plugin.</p>