private static String getFqn(Field field) {
        return field.getDeclaringClass().getName() + "." + field.getName();
    }
Reads all values of all tags that are annotated with {@link PlcEntity}.

@param proxy         Object to refresh the tags on.
@param connectionManager Connection Manager to use
@param registry      AliasRegistry to use
@param lastFetched   instants when which property was last fetched
@throws OPMException on various errors.
plc4j/tools/opm/src/main/java/org/apache/plc4x/java/opm/PlcEntityInterceptor.java