FreeBuilder

Generates full-featured builders from a simple @FreeBuilder annotation, eliminating the tedious, error-prone boilerplate described in Effective Java.

Creates partial implementations for unit tests, reducing fragility when new constraints or required fields are added, a unique feature highlighted in the README.

Includes getters, setters, mapper methods, and built-in support for collections, maps, nested builders, and optional values, as detailed in the accessor methods and collections sections.

Allows defaults, validation, and constraints by overriding methods in the builder subclass, providing flexibility without complex annotations.