optify 1.3.0

Simplifies getting the right configuration options for a process using pre-loaded configurations from files (JSON, YAML, etc.) to manage options for experiments or flights. This library is mainly made to support building implementations for other languages such as Node.js, Python, and Ruby. It is not meant to be consumed directly yet.
Documentation 
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use crate::builder::builder_options::BuilderOptions;
use std::path::Path;

use crate::provider::OptionsRegistry;

/// Trait defining the core functionality for building an options provider.
pub trait OptionsRegistryBuilder<T: OptionsRegistry> {
    // Adds multiple directories containing feature configurations.
    fn add_directories(&mut self, directories: &[impl AsRef<Path>]) -> Result<&Self, String>;

    /// Adds a directory containing feature configurations.
    fn add_directory(&mut self, directory: impl AsRef<Path>) -> Result<&Self, String>;

    /// Sets builder options to configure how schemas are built.
    fn with_options(&mut self, options: BuilderOptions) -> Result<&Self, String>;

    /// Sets a JSON schema for validation.
    /// When provided, files will be validated against this schema during loading when `add_directory` is called.
    /// Must be called before `add_directory` to take effect.
    fn with_schema(&mut self, schema_path: impl AsRef<Path>) -> Result<&Self, String>;

    /// Builds the options provider.
    fn build(&mut self) -> Result<T, String>;
}