code: private String convertToString(JsonNode jsonArrayNode) {
  
  		StringBuilder strBuilder = new StringBuilder();
  		Iterator<JsonNode> nodeIterator = jsonArrayNode.iterator();
  		while (nodeIterator.hasNext()) {
  			JsonNode jsonNode = (JsonNode) nodeIterator.next();
  			strBuilder.append(jsonNode.asText());
  			if (nodeIterator.hasNext()) {
  				strBuilder.append(ARRAY_VALUE_SEPARATOR);
  			}
  		}
  		return strBuilder.toString();
  	}
docs: Converts the json array node to a String
  
  @param jsonArrayNode
  the json array node to convert
  @return a string corresponding to the json array node