Converter converter = null;
if(!NoConversion.class.isAssignableFrom(idAnno.customConverter()))
converter = ReflectionUtil.create(idAnno.customConverter());
String columnName = field.getName();
if(!"".equals(idAnno.columnName()))
columnName = idAnno.columnName();
boolean isIndexed = false;
if(field.isAnnotationPresent(NoSqlIndexed.class))
isIndexed = true;