Clarification on concurrency

The text here:

* The classes in this package are NOT thread safe. In addition, the LMBC C API

Flatly states that this library is not thread safe. Is that really true? I know LMDB is thread safe, the tutorial even shares the env across threads (just not transactions):
https://github.com/lmdbjava/lmdbjava/blob/master/src/test/java/org/lmdbjava/TutorialTest.java#L181-L199

I just wanted to verify before committing to use this library. Thanks in advance!

(side note I'm assuming LMBC in that paragraph was meant to be LMDB?)