I'm using Robot Framework with Hi-Fi selenium-java implementation (https://github.com/Hi-Fi/robotframework-seleniumlibrary-java). But I need to use some of the keywords implemented in RF's "String" library (http://robotframework.org/robotframework/latest/libraries/String.html). Is there a way to do so in Java?
Otherwise: is there a way I can extend Hi-Fi's library and implement my own keywords?