import java.util.Collection;
import java.util.List;
import java.util.Map;

import org.apache.maven.api.Session;
import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Immutable;
import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.annotations.NotThreadSafe;
import org.apache.maven.api.annotations.Nullable;
import org.apache.maven.api.model.Profile;

    /**
     * Returns immutable user properties to use for interpolation. The user properties have been configured directly
     * by the user, e.g. via the {@code -Dkey=value} parameter on the command line.
     *
     * @return the user properties, never {@code null}
     */
    @Nonnull
    Map<String, String> getUserProperties();

    /**

        return recommendedVersion;
    }

    public List<Restriction> getRestrictions() {
        return restrictions;
    }

    /**
     * @deprecated VersionRange is immutable, cloning is not useful and even more an issue against the cache
     * @return a clone
     */
    @Deprecated
    public VersionRange cloneOf() {
        List<Restriction> copiedRestrictions = null;

import org.apache.maven.api.DependencyCoordinate;
import org.apache.maven.api.Project;
import org.apache.maven.api.Session;
import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Immutable;
import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.annotations.NotThreadSafe;
import org.apache.maven.api.annotations.Nullable;

import static org.apache.maven.api.services.BaseRequest.nonNull;

to support * new features and remain compatible with all Matcher implementations. * <p/> * For easy access to common Matcher implementations, use the static factory * methods in {@link CoreMatchers}. * <p/> * N.B. Well designed matchers should be immutable. * * @see CoreMatchers * @see BaseMatcher */ public interface Matcher<T> extends SelfDescribing { /** * Evaluates the matcher for argument <var>item</var>. * <p/> * This method matches against Object, instead of the generic type T. This is * because...