mMesures = new ArrayList () ;
  public MCollaborateur ()  {    mTaches          = new ArrayList () ;    mArtefacts       = new ArrayList () ;    mRoles           = new ArrayList () ;    mProjets         = new ArrayList () ;    mProjetsChef     = new ArrayList () ;    mTachesImprevues = new ArrayList () ;    mArtefactsImprevues = new ArrayList () ;    mTacheEnCours = -1 ;  }