Welcome to the lombok javadoc. If you're just looking to learn more about using lombok You probably want to look at the feature documentation. Otherwise, check the lombok package. If you're trying to extend lombok or write your own plugins, the other packages are what you're looking for.
Packages 
Package Description
lombok
This package contains all the annotations and support classes you need as a user of lombok.
lombok.experimental
This package contains the annotations and support classes you need as a user of lombok, for all features which aren't (yet) supported as a first class feature.
lombok.extern.apachecommons  
lombok.extern.flogger  
lombok.extern.jackson  
lombok.extern.java  
lombok.extern.jbosslog  
lombok.extern.log4j  
lombok.extern.slf4j