What is the task of the method whose tokenized name is "online median filter test median window filling"?
tokenized name refers to NameTokenized; task of the method refers to the second part of name deliminated by "."; for example, the task of 'LinqToDelicious.HttpWebRequestFactory.Create' is 'HttpWebRequestFactory'
SELECT SUBSTR(SUBSTR(Name, INSTR(Name, '.') + 1), 1, INSTR(SUBSTR(Name, INSTR(Name, '.') + 1), '.') - 1) task FROM Method WHERE NameTokenized = 'online median filter test median window filling'
database name:db_id codebase_comments
Method table Method Cols: Id dtype integer, Name dtype text, Full Comment dtype text, Summary dtype text, Api Calls dtype text, CommentIs Xml dtype integer, Sampled At dtype integer, Solution Id dtype integer, Language dtype text, Name Tokenized dtype text, 
MethodParameter table MethodParameter Cols: Id dtype integer, Method Id dtype text, Type dtype text, Name dtype text, 
Repo table Repo Cols: Id dtype integer, Url dtype text, Stars dtype integer, Forks dtype integer, Watchers dtype integer, Processed Time dtype integer, 
Solution table Solution Cols: Id dtype integer, Repository Id dtype integer, Path dtype text, Processed Time dtype integer, Was Compiled dtype integer, 
