assertEquals("convert /tmp/source.pdf -resize 100x100 /tmp/thumbnail.jpg", expandedCommand);
        assertFalse("Expanded command should not contain variables", expandedCommand.contains("${"));
    }

    // Test configuration validation
    public void test_configuration_validation() throws Exception {

    <version>999.0.0-HEAD-jre-SNAPSHOT</version>
  </parent>
  <artifactId>guava-gwt</artifactId>
  <name>Guava GWT compatible libs</name>
  <description>
    Guava is a suite of core and expanded libraries that include
    utility classes, Google's collections, I/O classes, and
    much more.

    This project includes GWT-friendly sources.
  </description>
  <properties>
    <gwt.version>2.12.2</gwt.version>

     * @param index              the index configuration name
     * @param indexName          the actual index name to create
     * @param numberOfShards     the number of primary shards
     * @param autoExpandReplicas the auto expand replicas setting
     * @param uploadConfig       whether to upload configuration files
     * @return true if the index was created successfully, false otherwise
     */