ProviderRegistry::getEnvVarName( string $providerId, string $field ): string

513    private function getEnvVarName(string $providerId, string $field): string514    {515        // Convert camelCase or kebab-case or snake_case to CONSTANT_CASE.516        $constantCaseProviderId = strtoupper((string) preg_replace('/([a-z])([A-Z])/', '$1_$2', str_replace('-', '_', $providerId)));517        $constantCaseField = strtoupper((string) preg_replace('/([a-z])([A-Z])/', '$1_$2', str_replace('-', '_', $field)));518        return "{$constantCaseProviderId}_{$constantCaseField}";519    }