Maybe the generic is not needed

[juanmbellini]

error-handler/src/main/java/com/bellotapps/utils/error_handler/HandlingResult.java

Line 71 in 0c3ff64

public static <T> HandlingResult<T> justErrorCode(final int httpErrorCode) {

We can replace with

public static HandlingResult<Void> justErrorCode(int httpErrorCode) {
        return new HandlingResult(httpErrorCode, null);
    }