BAEL-3347: example of version collision in Maven (#9644)
* BAEL-3347: example of version collision in Maven * BAEL-3347: created multi-module example of version collision in Maven * BAEL-3347: fixed placement of the dependencyManagement section, added maven-enforcer-plugin
This commit is contained in:
Maciej Główka
GitHub
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>maven-all</artifactId>
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<groupId>com.baeldung</groupId>
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<version>0.0.1-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>version-collision</artifactId>
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<packaging>pom</packaging>
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<modules>
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<module>project-a</module>
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<module>project-b</module>
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<module>project-collision</module>
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</modules>
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<!--comment section below to provoke version collision in project-collision module-->
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<dependencyManagement>
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<dependencies>
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<dependency>
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<groupId>com.google.guava</groupId>
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<artifactId>guava</artifactId>
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<version>29.0-jre</version>
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</dependency>
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</dependencies>
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</dependencyManagement>
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<!-- uncomment section below to ban the use of transitive dependencies -->
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<!-- <build>-->
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<!-- <plugins>-->
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<!-- <plugin>-->
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<!-- <groupId>org.apache.maven.plugins</groupId>-->
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<!-- <artifactId>maven-enforcer-plugin</artifactId>-->
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<!-- <version>3.0.0-M3</version>-->
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<!-- <executions>-->
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<!-- <execution>-->
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<!-- <id>enforce-banned-dependencies</id>-->
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<!-- <goals>-->
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<!-- <goal>enforce</goal>-->
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<!-- </goals>-->
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<!-- <configuration>-->
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<!-- <rules>-->
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<!-- <banTransitiveDependencies/>-->
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<!-- </rules>-->
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<!-- </configuration>-->
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<!-- </execution>-->
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<!-- </executions>-->
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<!-- </plugin>-->
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<!-- </plugins>-->
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<!-- </build>-->
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</project>
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>version-collision</artifactId>
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<groupId>com.baeldung</groupId>
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<version>0.0.1-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>project-a</artifactId>
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<dependencies>
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<dependency>
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<groupId>com.google.guava</groupId>
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<artifactId>guava</artifactId>
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<version>22.0</version>
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</dependency>
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</dependencies>
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</project>
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>version-collision</artifactId>
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<groupId>com.baeldung</groupId>
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<version>0.0.1-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>project-b</artifactId>
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<dependencies>
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<dependency>
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<groupId>com.google.guava</groupId>
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<artifactId>guava</artifactId>
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<version>29.0-jre</version>
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</dependency>
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</dependencies>
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</project>
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>version-collision</artifactId>
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<groupId>com.baeldung</groupId>
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<version>0.0.1-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>project-collision</artifactId>
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<dependencies>
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<dependency>
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<groupId>com.baeldung</groupId>
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<artifactId>project-a</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<!-- uncomment to exclude guava transitive artifact from module -->
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<!-- <exclusions>-->
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<!-- <exclusion>-->
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<!-- <groupId>com.google.guava</groupId>-->
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<!-- <artifactId>guava</artifactId>-->
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<!-- </exclusion>-->
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<!-- </exclusions>-->
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</dependency>
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<dependency>
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<groupId>com.baeldung</groupId>
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<artifactId>project-b</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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</dependency>
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</dependencies>
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</project>
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package com.baeldung.version.collision;
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import com.google.common.util.concurrent.Futures;
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import org.junit.Test;
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import static org.hamcrest.CoreMatchers.notNullValue;
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import static org.junit.Assert.assertThat;
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public class VersionCollisionUnitTest {
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@Test
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public void whenVersionCollisionDoesNotExist_thenShouldCompile() {
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assertThat(Futures.immediateVoidFuture(), notNullValue());
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}
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}
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<module>maven-war-plugin</module>
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<module>maven-war-plugin</module>
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<module>maven-profiles</module>
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<module>maven-profiles</module>
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<module>versions-maven-plugin</module>
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<module>versions-maven-plugin</module>
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<module>version-collision</module>
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</modules>
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</modules>
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</project>
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</project>
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@ -0,0 +1,21 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>version-collision</artifactId>
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<groupId>com.baeldung</groupId>
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<version>0.0.1-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>child-module</artifactId>
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<dependencies>
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<dependency>
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<groupId>org.apache.maven</groupId>
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<artifactId>maven-core</artifactId>
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<version>3.3.9</version>
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</dependency>
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</dependencies>
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</project>
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@ -0,0 +1,44 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>maven-all</artifactId>
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<groupId>com.baeldung</groupId>
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<version>0.0.1-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>version-collision</artifactId>
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<packaging>pom</packaging>
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<modules>
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<module>child-module</module>
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</modules>
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<dependencies>
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<dependency>
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<groupId>org.apache.commons</groupId>
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<artifactId>commons-configuration2</artifactId>
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<version>2.7</version>
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<!--uncomment section below to exclude commons-lang3 artifact to prevent version collision-->
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<!-- <exclusions>-->
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<!-- <exclusion>-->
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<!-- <groupId>org.apache.commons</groupId>-->
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<!-- <artifactId>commons-lang3</artifactId>-->
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<!-- </exclusion>-->
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<!-- </exclusions>-->
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</dependency>
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</dependencies>
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<!--uncomment section below to use dependencyManagement to prevent version collision-->
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<!-- <dependencyManagement>-->
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<!-- <dependencies>-->
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<!-- <dependency>-->
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<!-- <groupId>org.apache.commons</groupId>-->
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<!-- <artifactId>commons-lang3</artifactId>-->
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<!-- <version>3.4</version>-->
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<!-- </dependency>-->
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<!-- </dependencies>-->
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<!-- </dependencyManagement>-->
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</project>
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