# SystemPropertiesBuilder constructor

SystemPropertiesBuilder()

Builder for creating `_SystemProperties` instances using a fluent API.

This allows you to configure runtime properties step by step before finalizing the snapshot with build.

Example:

    final properties = _SystemProperties.builder()
      .compilationMode(CompilationMode.release)
      .runningFromDill(true)
      .entrypoint('build/main.dill')
      .build();

    print(properties.getCompilationMode()); // CompilationMode.release

## Implementation

    SystemPropertiesBuilder() : super.none();