Please reindent and reformat this fragment.

Applay 3 rulles for this fragment:
https://github.com/paralect/robomongo/wiki/Robomongo-Coding-Style#wiki-no-tabs
https://github.com/paralect/robomongo/wiki/Robomongo-Coding-Style#wiki-4-spaces
https://github.com/paralect/robomongo/wiki/Robomongo-Coding-Style#wiki-blank-lines