C: t1 CAPABILITY
  S: * CAPABILITY IMAP4rev2 ID LITERAL+ X-GOOD-IDEA
  S: t1 OK foo
  C: t2 ENABLE CONDSTORE X-GOOD-IDEA
  S: * ENABLED X-GOOD-IDEA
  S: t2 OK foo
  C: t3 CAPABILITY
  S: * CAPABILITY IMAP4rev2 ID LITERAL+ X-GOOD-IDEA
  S: t3 OK foo again