[plotterparameter] Set asset_type and asset_folder class information

beat/core/plotterparameter.py

@@ -59,6 +59,9 @@ class Storage(utils.Storage):
         ``<user>/<plotterparameter-name>/<version>``
     """
 
+    asset_type = "plotterparameter"
+    asset_folder = "plotterparameters"
+
     def __init__(self, prefix, name):
 
         if name.count("/") != 2:
@@ -69,7 +72,7 @@ class Storage(utils.Storage):
         self.prefix = prefix
 
         path = utils.hashed_or_simple(
-            self.prefix, "plotterparameters", name, suffix=".json"
+            self.prefix, self.asset_folder, name, suffix=".json"
         )
         path = path[:-5]