Kotlin Builder Pattern

This tool generates Kotlin builder pattern implementations and fluent APIs for a target class. It accepts a class name and a roster of properties with types, required status, and defaults, then outputs a clean, idiomatic builder API. It supports multiple variants (classic inner Builder, fluent DSL, and nested builders) to fit project conventions. The produced code emphasizes immutability, type safety, and predictable construction, making it suitable for library authors and API designers. Conceptually, it maps inputs to a build() path that returns the target type, with chainable setters for each property and validation of required fields before build. Optional fields receive defaults or remain nullable as configured. The generator can emit companion factory methods and toBuilder utilities, which aids refactoring and reuse. Output is Kotlin source compatible with JVM and, where applicable, Kotlin Multiplatform layouts. The tool also produces usage samples to illustrate proper construction flows and typical scenarios. Core features include property metadata capture, configurable builder style, and clean separation of concerns between API surface and construction logic. Use cases include modeling domain objects, configuring complex configurations, and exposing expressive builders for public APIs. Distinct value lies in its multi-variant output, clear metadata, and the ability to export ready-to-use code with usage examples, enabling rapid prototyping and consistent API design across modules.