<toolchain>
     <type>jdk</type>
     <provides>
         <version>1.4</version>
         <vendor>sun</vendor>
         <!-- no id, so it's considered 'default' -->
     </provides>
     <configuration>
        <jdkHome>${env.JAVA_HOME}</jdkHome>
     </configuration>
  </toolchain>
  <toolchain>
     <type>jdk</type>
     <provides>
         <version>1.7</version>
         <vendor>ibm</vendor>
         <id>ibm_17</id>

        <artifactId>b</artifactId>
        <version>0.1</version>
      </extension>
      <extension>
        <!-- project extensions should override inherited extension with equal gid:aid -->
        <groupId>org.apache.maven.its.mng3899</groupId>
        <artifactId>a</artifactId>
        <version>0.2</version>
      </extension>
    </extensions>
    <plugins>
      <plugin>

<?xml version="1.0" encoding="UTF-8"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

<?xml version="1.0" encoding="UTF-8"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

        go-version: [1.24.x]
        os: [ubuntu-latest]

    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-go@v5
        with:
          go-version: ${{ matrix.go-version }}
          check-latest: true
      - name: Start upgrade tests
        run: |

			<param name="plugin.version" value="3.4.0" />
			<param name="plugin.zip.version" value="3.4.0" />
		</antcall>

		<antcall target="remove.jars" />
	</target>

	<target name="install.plugin">
		<get dest="${target.dir}">
			<url url="${repo.url}/${plugin.groupId}/${plugin.name.prefix}${plugin.name}/${plugin.version}/${plugin.name.prefix}${plugin.name}-${plugin.zip.version}.zip" />
		</get>

        VersionRange versionRange;
        try {
            String version = plugin.getVersion();
            if (version == null || version.isEmpty()) {
                version = "RELEASE";
            }
            versionRange = VersionRange.createFromVersionSpec(version);
        } catch (InvalidVersionSpecificationException e) {
            return null;
        }

    public DefaultModelProblem(
            String message,
            Severity severity,
            Version version,
            Model source,
            int lineNumber,
            int columnNumber,
            Exception exception) {
        this(
                message,
                severity,
                version,
                ModelProblemUtils.toPath(source),
                lineNumber,
                columnNumber,

            throws Exception {
        String projectExtensionsXml = """
                <?xml version="1.0" encoding="UTF-8"?>
                <extensions>
                    <extension>
                        <groupId>io.takari.maven</groupId>
                        <artifactId>takari-smart-builder</artifactId>
                        <version>1.0.2</version>
                    </extension>
                    <extension>

    }

    /**
     * Gets the effective version of the model.
     *
     * @return The effective version of the model or an empty string if unknown, never {@code null}.
     */
    public String getVersion() {
        return (version != null) ? version : "";
    }

    /**
     * Sets the effective version of the model.
     *
     * @param version The effective version of the model, may be {@code null}.
     */