public MavenToolchainsXpp3Reader() {
        delegate = new MavenToolchainsStaxReader();
    }

    public MavenToolchainsXpp3Reader(ContentTransformer contentTransformer) {
        delegate = contentTransformer != null
                ? new MavenToolchainsStaxReader(contentTransformer::transform)
                : new MavenToolchainsStaxReader();
    }

    /**

import org.apache.maven.toolchain.model.PersistedToolchains;
import org.apache.maven.toolchain.v4.MavenToolchainsStaxReader;

/**
 * Handles deserialization of toolchains from the default textual format.
 *
 * @since 3.3.0
 * @deprecated since 4.0.0, use {@link MavenToolchainsStaxReader} instead
 */
@Named
@Singleton
@Deprecated(since = "4.0.0")

import javax.inject.Singleton;

import java.io.File;
import java.io.InputStream;
import java.nio.file.Files;

import org.apache.maven.toolchain.model.PersistedToolchains;
import org.apache.maven.toolchain.v4.MavenToolchainsStaxReader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @deprecated instead use {@link org.apache.maven.toolchain.building.DefaultToolchainsBuilder}
 */
@Deprecated
@Named("default")