Refactored parsing task

lib/models/task.dart

@@ -33,36 +33,32 @@ class Task {
       this.updated,
       this.createdBy});
 
-  Task.fromJson(Map<String, dynamic> inp)
-      : id = inp['id'],
-        text = inp['text'],
-        description = inp['description'],
-        done = inp['done'],
-        reminderDates = (inp['reminderDates'] as List<dynamic>)
-                ?.map((ts) => dateTimeFromUnixTimestamp(ts))
-                ?.cast<DateTime>()
-                ?.toList(),
-        dueDate = dateTimeFromUnixTimestamp(inp['dueDate']),
-        startDate = dateTimeFromUnixTimestamp(inp['startDate']),
-        endDate = dateTimeFromUnixTimestamp(inp['endDate']),
-        parentTaskID = inp['parentTaskID'],
-        priority = inp['priority'],
-        repeatAfter = Duration(seconds: inp['repeatAfter']),
-        labels = inp['labels'] == null
-            ? null
-            : (inp['labels'] as List<dynamic>)
-                .map((label) => Label.fromJson(label))
-                .cast<Label>()
-                .toList(),
-        subtasks = inp['subtasks'] == null
-            ? null
-            : (inp['subtasks'] as List<dynamic>)
-                .map((subtask) => Task.fromJson(subtask))
-                .cast<Task>()
-                .toList(),
-        updated = dateTimeFromUnixTimestamp(inp['updated']),
-        created = dateTimeFromUnixTimestamp(inp['created']),
-        createdBy = User.fromJson(inp['createdBy']);
+  Task.fromJson(Map<String, dynamic> json)
+      : id = json['id'],
+        text = json['text'],
+        description = json['description'],
+        done = json['done'],
+        reminderDates = (json['reminderDates'] as List<dynamic>)
+            ?.map((ts) => dateTimeFromUnixTimestamp(ts))
+            ?.cast<DateTime>()
+            ?.toList(),
+        dueDate = dateTimeFromUnixTimestamp(json['dueDate']),
+        startDate = dateTimeFromUnixTimestamp(json['startDate']),
+        endDate = dateTimeFromUnixTimestamp(json['endDate']),
+        parentTaskID = json['parentTaskID'],
+        priority = json['priority'],
+        repeatAfter = Duration(seconds: json['repeatAfter']),
+        labels = (json['labels'] as List<dynamic>)
+            ?.map((label) => Label.fromJson(label))
+            ?.cast<Label>()
+            ?.toList(),
+        subtasks = (json['subtasks'] as List<dynamic>)
+            ?.map((subtask) => Task.fromJson(subtask))
+            ?.cast<Task>()
+            ?.toList(),
+        updated = dateTimeFromUnixTimestamp(json['updated']),
+        created = dateTimeFromUnixTimestamp(json['created']),
+        createdBy = User.fromJson(json['createdBy']);
 
   toJSON() => {
         'id': id,