code: static int readInt(JsonNode node, String field) throws NumberFormatException {
  		String stringValue = node.get(field).asText();
  		return (int) Float.parseFloat(stringValue);
  	}
docs: Reads a whole number from the given field of the node. Accepts numbers,
  numerical strings and fractions.
  
  @param node node from which to read
  @param field name of the field to read
  @return the field's int value
  @throws NumberFormatException if the content cannot be parsed to a number