Question about contributing: code styles

[mickverm]

Hey,

I want to make a contributing to include new api's added in RxJava3 but have a question about the code styles.

Contributing.md states the following:

When submitting code, please make every effort to follow existing conventions and style in order to keep the code as readable as possible.

I feel like there's not one clear code style used and was wondering if I could do something about it. Or are there specific Intellij code style settings I should apply when contributing to this project?
Trying to follow the code style manually is pretty tricky because pressing ctrl+alt+L in Intellij (with all default settings) shifts a lot of code.