private static String convertToEnvName()

in impl/src/main/java/org/apache/rocketmq/remoting/internal/BeanUtils.java [114:123]

• 10 lines of code
• 3 McCabe index (conditional complexity)

    private static String convertToEnvName(String variableName) {
        StringBuilder sb = new StringBuilder();
        for (char c : variableName.toCharArray()) {
            if (Character.isUpperCase(c)) {
                sb.append('_');
            }
            sb.append(Character.toUpperCase(c));
        }
        return sb.toString();
    }