How many methods with solutions with path 'maravillas_linq-to-delicious\tasty.sln'?
solution refers to SolutionId;
SELECT COUNT(T2.SolutionId) FROM Solution AS T1 INNER JOIN Method AS T2 ON T1.Id = T2.SolutionId WHERE T1.Path = 'maravillas_linq-to-delicious\tasty.sln'