if (uidNumber != null) {
            addFieldToSource(sourceMap, "uidNumber", uidNumber);
        }
        if (x121Address != null) {
            addFieldToSource(sourceMap, "x121Address", x121Address);
        }
        return sourceMap;
    }

    protected void addFieldToSource(Map<String, Object> sourceMap, String field, Object value) {
        sourceMap.put(field, value);
    }

        Map<String, Object> sourceMap = new HashMap<>();
        if (authRealm != null) {
            addFieldToSource(sourceMap, "authRealm", authRealm);
        }
        if (createdBy != null) {
            addFieldToSource(sourceMap, "createdBy", createdBy);
        }
        if (createdTime != null) {
            addFieldToSource(sourceMap, "createdTime", createdTime);
        }

            addFieldToSource(sourceMap, "updatedBy", updatedBy);
        }
        if (updatedTime != null) {
            addFieldToSource(sourceMap, "updatedTime", updatedTime);
        }
        if (virtualHosts != null) {
            addFieldToSource(sourceMap, "virtualHosts", virtualHosts);
        }
        return sourceMap;
    }

    protected void addFieldToSource(Map<String, Object> sourceMap, String field, Object value) {

        Map<String, Object> sourceMap = new HashMap<>();
        if (accessType != null) {
            addFieldToSource(sourceMap, "accessType", accessType);
        }
        if (clientIp != null) {
            addFieldToSource(sourceMap, "clientIp", clientIp);
        }
        if (hitCount != null) {
            addFieldToSource(sourceMap, "hitCount", hitCount);
        }

        }
        if (updatedTime != null) {
            addFieldToSource(sourceMap, "updatedTime", updatedTime);
        }
        if (value != null) {
            addFieldToSource(sourceMap, "value", value);
        }
        if (virtualHost != null) {
            addFieldToSource(sourceMap, "virtualHost", virtualHost);
        }
        return sourceMap;
    }

            addFieldToSource(sourceMap, "startTime", startTime);
        }
        if (target != null) {
            addFieldToSource(sourceMap, "target", target);
        }
        return sourceMap;
    }

    protected void addFieldToSource(Map<String, Object> sourceMap, String field, Object value) {
        sourceMap.put(field, value);
    }

        }
        if (updatedBy != null) {
            addFieldToSource(sourceMap, "updatedBy", updatedBy);
        }
        if (updatedTime != null) {
            addFieldToSource(sourceMap, "updatedTime", updatedTime);
        }
        if (value != null) {
            addFieldToSource(sourceMap, "value", value);
        }
        return sourceMap;
    }

        sourceMap.put("headers", headerMap);
        sourceMap.put("documents", documentList);
        return sourceMap;
    }

    @Override
    protected void addFieldToSource(final Map<String, Object> sourceMap, final String field, final Object value) {
        if (value instanceof final LocalDateTime ldt) {

      @Override
      public Map<Object, Object> create(List<?> keys) {
        Map<Object, Object> sourceMap = new LinkedHashMap<>();
        for (Object k : keys) {
          if (sourceMap.put(k, "dummy value") != null) {
            throw new UnsupportedOperationException("duplicate key");
          }
        }
        return ImmutableMap.copyOf(sourceMap);
      }
    },
    COPY_OF_ENTRIES {
      @Override

    }

    @Override
    public Map<String, Object> toSource() {
        final Map<String, Object> sourceMap = super.toSource();
        if (fields != null) {
            sourceMap.putAll(fields);
        }
        return sourceMap;
    }

    @Override
    protected void addFieldToSource(final Map<String, Object> sourceMap, final String field, final Object value) {
        if (value instanceof final LocalDateTime ldt) {