crude workaround for path collisions

[neelance]

This is to avoid a path collision between an interface method's name and a parameter with the same name of another method of the same interface. Tried long to find some less radical workaround, found none. Proper fix needs major rewrite of this code based on AST traversal. Feeling bad...

[beyang]

Is it difficult to emit the path as ${interface_name}/${method_name}/${param_name}?

[neelance]

@beyang Yes it is, because the code currently traverses the scopes instead of the AST. The relationship between the parameter object and the interface/method is lost in those data structures. I really tried for a long time...

[beyang]

got it, LGTM