Right. But now I change my mind and think that consistency here should be around importancy of parameters:
If we say 'evaluate xpath', so we except that fist parameter should be exactly xpath.
And I think we have to change `#jsonPath` this way.
When I wrote `#jsonPath` I was thinking about length of values for parameters.
So, we should decide which variant is more robust:
````xml
#jsonPath(payload, '$.store.book[0].author')
````
or 
````xml
#jsonPath('$.store.book[0].author', payload)
````