Mention the "use" extension method in exceptions.md

[mikehearn]

Compare it to Java's try-with-resources statement.

[abreslav]

@hhariri what do you think: does this information belong to the language reference?

[hhariri]

I'd say something like this is better suited in the Idioms and/or FAQ section. Otherwise, we could add too many constructs and alternatives in different sections of the reference docs. While Kotlin targets the JVM, Java isn't the only language that Kotlin users are coming from, and things like this could be also compared to 'using' statement in C#. Then it would become a mess.

I'd move it to under FAQ most likely and if we start to get enough alternatives for Java then have its own FAQ doc.

[yole]

I've added this example to the 'idioms' section.