1  [:get, :post, :patch, :put, :delete, :head, :before, :after].each do |verb|
2    real_method = :"real_#{verb}"
3    alias_method real_method, verb
4    define_method(verb) do |path = nil, opts = {}, &block|
5      create_route(verb, real_method, path, opts, 1, &block)
6    end
7  end
8
9  def create_route(...)
10   # method call that calls caller
11 end
12
13 # this is actually a different file that loads the above (caller_file)
14
15 get '/foo' do 
16   ...
17 end
18
19 patch '/bar' do 
20   ...
21 end
```

when patch is called, stack trace looks like
```
file.rb:10:in `create_route'
file.rb:9:in `create_route'
file.rb:5:in `block in patch'
caller_file.rb:38:in `<class:Engine>'
```

when get it called stack trace looks like: 
```
file.rb:10:in `create_route'
file.rb:5:in `block in get'
caller_file.rb:15:in `<class:Engine>'