Identify using statment patterns.

[hazzik]

It would be nice to have a feature which is able to detect using patterns For example, if we have a try-finally statement and call of close method of AutoCloseable or Closeable interfaces then we can convert this try-finally statement to a C# using statement.

[lilith]

Seems like a lot of work in order to use syntactic sugar. Try/finally is being generated correct, right? We just want to optimize to a using(){} when possible (which is then converted back to try/finally by the compiler)?