Perform alterations on language negoiation providers.
$language_providers: Array of language negotiation provider definitions.
hook_language_negotiation_info()
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
function hook_language_negotiation_info_alter(array &$language_providers) {
if (isset($language_providers['custom_language_provider'])) {
$language_providers['custom_language_provider']['config'] = 'admin/config/regional/language/configure/custom-language-provider';
}
}