<project xmlns="http://maven.apache.org/POM/4.1.0">
  <parent>
    <groupId>org.my.group</groupId>
    <artifactId>parent</artifactId>
  </parent>
  <artifactId>child</artifactId>
  <packaging>jar</packaging>

  <properties>
    <prop-child>bar</prop-child>
  </properties>
  <dependencies>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
    </dependency>
  </dependencies>

                -->
              <extraJvmArgs>-Dgwt.watchFileChanges=false</extraJvmArgs>
            </configuration>
          </execution>
          <!--
            GWT issues some scary warnings while running tests, but I believe they are harmless.
            Let's take the warnings for one module, c.g.c.base.testModule, as an example:

              [INFO] Validating units:

<project root="true" xmlns="http://maven.apache.org/POM/4.1.0">
  <groupId>org.my.group</groupId>
  <artifactId>parent</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>pom</packaging>

  <modules>
    <module>child.xml</module>
  </modules>

  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>2.0.9</version>