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+<!-- https://mermaid.live -->
+
+```mermaid
+classDiagram
+    class Tache {
+        $-counter_id
+        -nom
+        -duree_total
+        -etat
+        -dependances
+        +unique_id
+        +visite
+
+        +realise()
+        +depends_from()
+        +ajouteDependance()
+        +dureeParal()
+        +PP_postfixe()
+        +get_duree_totale()
+        +get_name()
+    }
+
+    class Projet {
+        #tache_fin
+        #tache_debut
+        #taches
+        -cleanMarks()*
+        #pick_two_random_tasks()
+        #contains()
+        #topologicalSort()
+        +consult_tasks()
+    }
+    class ProtoProjet {
+        -cleanMarks()
+        +ajoute()
+    }
+    class RunProjet {
+        +run()
+    }
+
+    class Gestionnaire {
+        -salaire_attendu
+        -salaire_recu
+        -reste_a_payer()
+        +payer()
+        +avis()*
+    }
+    class Consultant {
+        +avis()
+    }
+    class Expert {
+        +avis()
+    }
+```