<goals>
                  <goal>enforce</goal>
                </goals>
                <configuration>
                  <rules>
                    <requireJavaVersion>
                      <version>1.5</version>
                    </requireJavaVersion>
                  </rules>
                </configuration>
              </execution>
            </executions>
          </plugin>
        </plugins>

                <goals>
                  <goal>enforce</goal>
                </goals>
                <configuration>
                  <rules>
                    <requireJavaVersion>
                      <version>1.5</version>
                    </requireJavaVersion>
                  </rules>
                </configuration>
              </execution>
            </executions>
          </plugin>
        </plugins>

            project, but this usage is <b>deprecated</b> in Maven 3 and not checked any more: use
            the <a href="https://maven.apache.org/enforcer/enforcer-rules/requireMavenVersion.html">Maven Enforcer Plugin's
            {@code requireMavenVersion} rule</a> instead.
            ]]>
          </description>
          <required>false</required>
        </field>
      </fields>
    </class>
    <class>

            </goals>
            <configuration>
              <rules>
                <requireMavenVersion>
                  <version>3.0.5</version>
                </requireMavenVersion>
                <requireJavaVersion>
                  <version>1.8.0</version>
                </requireJavaVersion>
              </rules>
            </configuration>
          </execution>
        </executions>