rewrite methods for participation

src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php

@@ -384,9 +384,9 @@ class AccompanyingPeriod
     }
 
     /**
-     * Add Person
+     * Open a new participation for a person
      */
-    public function addPerson(Person $person = null): AccompanyingPeriodParticipation
+    public function createParticipationFor(Person $person): AccompanyingPeriodParticipation
     {
         $participation = new AccompanyingPeriodParticipation($this, $person);
         $this->participations[] = $participation;
@@ -394,10 +394,24 @@ class AccompanyingPeriod
         return $participation;
     }
 
+    public function addPerson(Person $person = null): self
+    {
+        if (NULL !== $person) {
+            $this->createParticipationFor($person);
+        }
+
+        return $this;
+    }
+
     /**
-     * Remove Person
+     * Close a participation for a person
+     *
+     * Search for the person's participation and set the end date at
+     * 'now'.
+     *
+     * @return void
      */
-    public function removePerson(Person $person): ?AccompanyingPeriodParticipation
+    public function closeParticipationFor($person): ?AccompanyingPeriodParticipation
     {
         $participation = $this->getOpenParticipationContainsPerson($person);
 
@@ -407,6 +421,17 @@ class AccompanyingPeriod
 
         return $participation;
     }
+    
+
+    /**
+     * Remove Person
+     */
+    public function removePerson(Person $person): self
+    {
+        $this->closeParticipationFor($person);
+
+        return $this;
+    }
 
 
     public function getClosingMotive(): ?ClosingMotive