method snippets need to be type aware

[fbricon]

When in the body of an interface, the public_method snippet inserts:

    public void name() {
        
    }

instead of

    public void name();

There might be a way to return an interface-friendly snippet, depending on the context. Same issue with the private_method snippet.

Actually, a bunch of snippets irrelevant to the interface body context are proposed: try_catch, try_resources, switch, ctor, protected_method. We shouldn't see them here. Actually try_catch, try_resources, switch should only be proposed when completing inside a code block, regardless of the type.

[rgrunber]

@hopehadfield , were you looking at this issue when you considered making our method snippets more context aware ?

[hopehadfield]

@rgrunber yes, this is the one.