ENH: allow datatype for set_property

src/caosadvancedtools/cfood.py

@@ -141,9 +141,13 @@ class AbstractCFood(object):
 
     @staticmethod
     # move to api?
-    def set_property(entity, prop, value):
+    def set_property(entity, prop, value, datatype=None):
         AbstractCFood.remove_property(entity, prop)
-        entity.add_property(prop, value)
+
+        if datatype is not None:
+            entity.add_property(prop, value, datatype=datatype)
+        else:
+            entity.add_property(prop, value)
 
     @staticmethod
     def find_existing(entity):