com.hotels.beans:bull-bean-transformer (maven):  This BeanUtils library is a Java Bean to Java Bean transformer that recursively copies data from one object to another, it is generic, flexible, reusable, configurable and incredibly fast. It's the only library able to transform Mutable, Immutable and Mixed bean without any custom configuration. 
Keywords: beancopy|beanutils|bull|hacktoberfest|immutable-objects|java|java-bean|mapper|mapping|mutable|oss-portal-featured|transformation|transformations