Function fluent_templates::loader::build_bundles

pub fn build_bundles(
    resources: &'static HashMap<LanguageIdentifier, Vec<FluentResource>>, 
    core_resource: Option<&'static FluentResource>, 
    customizer: impl Fn(&mut FluentBundle<&'static FluentResource>)
) -> HashMap<LanguageIdentifier, FluentBundle<&'static FluentResource>>

Maps from map of languages containing a list of resources to a map of languages containing a FluentBundle of those resources.