code: public void setUsers(java.util.Collection<TraceUser> users) {
          if (users == null) {
              this.users = null;
              return;
          }
  
          this.users = new java.util.ArrayList<TraceUser>(users);
      }
docs: <p>
  Users from the trace's segment documents.
  </p>
  
  @param users
  Users from the trace's segment documents.