result.setName(DfTypeUtil.toString(source.get("name")));
            result.setPermissions(toStringArray(source.get("permissions")));
            result.setSortOrder(DfTypeUtil.toInteger(source.get("sortOrder")));
            result.setUpdatedBy(DfTypeUtil.toString(source.get("updatedBy")));
            result.setUpdatedTime(DfTypeUtil.toLong(source.get("updatedTime")));

                PluginExecution target,
                PluginExecution source,
                boolean sourceDominant,
                Map<Object, Object> context) {
            if (target.getPriority() > source.getPriority()) {
                builder.priority(source.getPriority());
                builder.location("priority", source.getLocation("priority"));
            }
        }

        source.put("aaa", "");
        source.put("bbb", "a");
        assertFalse(fessConfig.validateIndexRequiredFields(source));
        source.put("aaa", " ");
        source.put("bbb", "a");
        assertFalse(fessConfig.validateIndexRequiredFields(source));
        source.put("aaa", "a");
        source.put("bbb", "a");

          "format": "time_series",

            result.setReading(DfTypeUtil.toString(source.get("reading")));
            result.setSuggestWord(DfTypeUtil.toString(source.get("suggestWord")));
            result.setUpdatedBy(DfTypeUtil.toString(source.get("updatedBy")));
            result.setUpdatedTime(DfTypeUtil.toLong(source.get("updatedTime")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {

            result.setQueryRequestedAt(toLocalDateTime(source.get("queryRequestedAt")));
            result.setRequestedAt(toLocalDateTime(source.get("requestedAt")));
            result.setUrl(DfTypeUtil.toString(source.get("url")));
            result.setUserSessionId(DfTypeUtil.toString(source.get("userSessionId")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {

    /**
     * Builds the effective toolchains for the specified toolchains sources.
     *
     * @param session the {@link Session}, must not be {@code null}
     * @param globalToolchainsSource The {@link Source} pointing to the global toolchains, must not be {@code null}
     * @param userToolchainsSource The {@link Source} pointing to the user toolchains, must not be {@code null}

            result.setDescription(DfTypeUtil.toString(source.get("description")));
            result.setDestinationIndicator(DfTypeUtil.toString(source.get("destinationIndicator")));
            result.setDisplayName(DfTypeUtil.toString(source.get("displayName")));
            result.setEmployeeNumber(DfTypeUtil.toString(source.get("employeeNumber")));

    }

    private static class MappedToolchainsSource implements org.apache.maven.building.Source {
        private final Source source;

        MappedToolchainsSource(Source source) {
            this.source = source;
        }

        @Override
        public InputStream getInputStream() throws IOException {
            return source.openStream();
        }

        @Override
        public String getLocation() {

          "format":...