Update Imports rules

Signed-off-by: Tran Ngoc Nhan <ngocnhan.tran1996@gmail.com>

Author: ngocnhan-tran1996

parent/pom.xml

@@ -191,12 +191,26 @@
 									<!-- Configure checker to use UTF-8 encoding -->
 									<property name="charset" value="UTF-8"/>
 
+									<!-- TreeWalker Checks -->
+									<module name="TreeWalker">
+
+										<!-- Imports -->
+										<module name="RedundantImport"/>
+										<module name="UnusedImports" />
+									</module>
 									<module name="io.spring.nohttp.checkstyle.check.NoHttpCheck">
 										<!-- XML requires double escaping, config gets XML-processed twice -->
 										<property name="allowlist" value="http://www\.querydsl\.com.*&amp;#10;http://www\.prowaveconsulting\.com.*&amp;#10;http://www\.scispike\.com.*&amp;#10;http://.*.icu-project\.org.*"/>
 									</module>
 								</module>
 							</checkstyleRules>
+							<checkstyleRulesHeader>
+								<![CDATA[
+									<!DOCTYPE module PUBLIC
+									  "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
+									  "https://checkstyle.org/dtds/configuration_1_3.dtd">
+								]]>
+							</checkstyleRulesHeader>
 							<includes>**/*</includes>
 							<excludes>
 								**/.flattened-pom.xml,.git/**/*,target/**/*,**/target/**/*,.idea/**/*,**/spring.schemas,**/*.svg,mvnw,mvnw.cmd,**/*.graphml,work/**/*