request -> requests for readability

src/main/java/nl/tudelft/ewi/queue/model/Request.java

@@ -541,17 +541,17 @@ public class Request implements RecordsEvents<Request>, Serializable, Comparable
     }
 
     public HashMap<String, String> toHashMap() {
-        HashMap<String, String> request = new HashMap<>();
-        request.put("id", this.getId().toString());
-        request.put("status", this.getStatus().toString());
-        request.put("sentence", this.toSentence());
-        request.put("labId", this.getLab().getId().toString());
-        request.put("course", this.getLab().getCourse().toString());
+        HashMap<String, String> requests = new HashMap<>();
+        requests.put("id", this.getId().toString());
+        requests.put("status", this.getStatus().toString());
+        requests.put("sentence", this.toSentence());
+        requests.put("labId", this.getLab().getId().toString());
+        requests.put("course", this.getLab().getCourse().toString());
         if (this.getAssistant() != null)
-            request.put("assigned", this.getAssistant().toString());
+            requests.put("assigned", this.getAssistant().toString());
         if (this.getHandledAt() != null)
-            request.put("handled", this.getHandledAt().toString());
-        return request;
+            requests.put("handled", this.getHandledAt().toString());
+        return requests;
     }
 
     public static String requestsPerHour(LocalDateTime start, LocalDateTime end, List<Request> requestList) throws JsonProcessingException {