digraph G {

    rankdir = LR

    node [
        fontname = "Helvetica"
        fontsize = 10
        shape = "record"
    ]

    Controleur [ label = "{ Controleur }" ]

    Vue [ label = "{ Vue }" ]

    Stock [ label = "{ Stock }" ]

    edge [ 
        dir = both
        arrowhead = "none" 
        arrowtail = "diamond" 
    ]
    Controleur -> Vue
    Controleur -> Stock

}