* @param field - {@link Field} of a class.
* @return {@link BigQueryDataField} annotation description. Null if annotation is not present.
*/
public static String getFieldDescription(Field field) {
BigQueryDataField bq = field.getAnnotation(BigQueryDataField.class);
if (bq == null || bq.description().equals("")) {
return null;
}
return bq.description();
}