/**
     * Adds the environment variables in the form of properties whose keys are prefixed with {@code env.}, e.g. {@code
     * env.PATH}. Unlike native environment variables, properties are always case-sensitive. For the sake of
     * determinism, the environment variable names will be normalized to upper case on platforms with case-insensitive
     * variable lookup.
     *

    /**
     * Gets the system properties to use for interpolation and profile activation. The system properties are collected
     * from the runtime environment like {@link System#getProperties()} and environment variables.
     *
     * @return The execution properties, never {@code null}.
     */
    Map<String, String> getSystemProperties();

    /**

            problems.add(new DefaultBuilderProblem(
                    null,
                    -1,
                    -1,
                    e,
                    "Failed to use environment variables for interpolation: " + e.getMessage(),
                    BuilderProblem.Severity.WARNING));
        }

        return new MavenToolchainsTransformer(value -> {
                    try {

    /**
     * Returns immutable system properties to use for interpolation. The system properties are collected from the
     * runtime environment such as {@link System#getProperties()} and environment variables
     * (prefixed with {@code env.}).
     *
     * @return the system properties, never {@code null}
     */
    @Nonnull
    Map<String, String> getSystemProperties();

    /**

package org.apache.maven.configuration;

/**
 * Preprocesses a value from a bean configuration before the bean configurator unmarshals it into a bean property. A
 * common use case for such preprocessing is the evaluation of variables within the configuration value.
 *
 */
public interface BeanConfigurationValuePreprocessor {

    /**
     * Preprocesses the specified bean configuration value. The optional type provided to this method is a hint (not a

        activated. On the other hand, {@code exists} will test for the existence of the file and if it is
        there, the profile will be activated.
        <p>Variable interpolation for these file specifications is limited to {@code ${project.basedir}},
        system properties and user properties.&lt;/p></description>
      <fields>
        <field>
          <name>missing</name>

      matrix:
        os: [ubuntu-latest, windows-latest, macOS-latest]
        java: [17, 21]

      fail-fast: false
    runs-on: ${{ matrix.os }}

    steps:
      - name: Collect environment context variables
        shell: bash
        env:
          PR_HEAD_LABEL: ${{ github.event.pull_request.head.label }}
        run: |
          set +e
          repo=maven-integration-testing
          target_branch=master

            problems.add(new DefaultBuilderProblem(
                    null,
                    -1,
                    -1,
                    e,
                    "Failed to use environment variables for interpolation: " + e.getMessage(),
                    BuilderProblem.Severity.WARNING));
        }

        return new SettingsTransformer(value -> {
                    try {

    }

    /**
     * Gets the system properties to use for interpolation and profile activation. The system properties are collected
     * from the runtime environment like {@link System#getProperties()} and environment variables.
     *
     * @return The system properties, never {@code null}.
     */
    public Properties getSystemProperties() {
        return request.getSystemProperties();
    }

getValue(String); } org/codehaus/plexus/util/InterpolationFilterR.class package org.codehaus.plexus.util; public synchronized class InterpolationFilterR extends java.io.FilterReader { private String replaceData; private int replaceIndex; private java.util.Map variables; private String beginToken; private String endToken; private int beginTokenLength; private int endTokenLength; private static String DEFAULT_BEGIN_TOKEN; private static String DEFAULT_END_TOKEN; public void InterpolationFilterR(java.io.Reader, java.util.Map,...