Method concatArrays

src/main/java/com/ericsson/commonlibrary/proxy/Util.java:558–570

Concatenate two arrays into one. The passed in arrays will be unaltered. They will only be used in construction of a new array @param firstArray the first array @param varargsArrays the other arrays to concat to one large array @return a new merged array

(final T[] firstArray, final T[]... varargsArrays)

     * @return a new merged array
     */
    static <T> T[] concatArrays(final T[] firstArray, final T[]... varargsArrays) {
        int totalLength = firstArray.length;
        for (final T[] array : varargsArrays) {
            totalLength += array.length;
        }
        final T[] result = Arrays.copyOf(firstArray, totalLength);
        int offset = firstArray.length;
        for (final T[] array : varargsArrays) {
            System.arraycopy(array, 0, result, offset, array.length);
            offset += array.length;
        }
        return result;
    }

    static void cleanMethodNameField(Method met) throws NoSuchFieldException, IllegalAccessException {
        if (met.getName().startsWith("_")) {