import static java.util.Objects.requireNonNull;

/**
 * Represents a request to parse Maven command-line arguments.
 * This interface encapsulates all the necessary information needed to parse
 * Maven commands and arguments into an {@link InvokerRequest}.
 *
 * @since 4.0.0
 */
@Immutable
@Experimental
public interface ParserRequest {
    String MVN_CMD = "mvn";
    String MVN_NAME = "Maven";

    String MVNENC_CMD = "mvnenc";

)

// Provider implements identity provider specific admin operations, such as
// looking up users, fetching additional attributes etc.
type Provider interface {
	LoginWithUser(username, password string) error
	LoginWithClientID(clientID, clientSecret string) error
	LookupUser(userid string) (User, error)

[
	uuid(12345778-1234-abcd-ef00-0123456789ac),
	version(1.0)
]
interface samr
{
	import "../rpc.idl";
	import "lsarpc.idl";

	typedef [v1_enum] enum {
		ACB_DISABLED               = 0x00000001, /* 1 = User account disabled */
		ACB_HOMDIRREQ              = 0x00000002, /* 1 = Home directory required */
		ACB_PWNOTREQ               = 0x00000004, /* 1 = User password not required */

 * or a simple string message. In addition, a problem carries a hint about its source, e.g. the POM file that exhibits
 * the problem.
 *
 */
public interface ModelProblem extends BuilderProblem {

    /**
     * Version
     */
    enum Version {
        // based on ModeBuildingResult.validationLevel
        BASE,
        V20,
        V30,
        V31,

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;

/**
 * Service to manage {@link Toolchain}s.
 *
 * @since 4.0.0
 */
@Experimental
public interface ToolchainManager extends Service {

    /**
     *
     * @param session
     * @param type
     * @param requirements
     * @return the selected {@link Toolchain}s

 * resolver preference regarding transport is altered, it will affect this service as well.
 *
 * @since 4.0.0
 */
@Experimental
@Consumer
public interface TransportProvider extends Service {
    /**
     * Provides new {@link Transport} instance for given {@link RemoteRepository}, if possible.
     *

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;

/**
 * Resolves artifact meta/pseudo versions.
 *
 * @since 4.0.0
 */
@Experimental
@Consumer
public interface VersionResolver extends Service {

    /**
     * Resolves an artifact's meta version (if any) to a concrete version.
     * For example, resolves "1.0-SNAPSHOT" to "1.0-20090208.132618-23".
     *

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 *
 * @since 4.0.0
 * @see org.apache.maven.api.services.DependencyResolverResult#getRoot()
 */
@Experimental
@Immutable
@Provider
public interface Node {

    /**
     * @return artifact for this node
     */
    @Nullable
    Artifact getArtifact();

    /**
     * @return dependency for this node
     */
    @Nullable

import org.apache.maven.api.annotations.Nullable;

/**
 * An XML writer request.
 *
 * @since 4.0.0
 * @param <T> the object type to read
 */
@Experimental
public interface XmlWriterRequest<T> {

    @Nullable
    Path getPath();

    @Nullable
    OutputStream getOutputStream();

    @Nullable
    Writer getWriter();

    @Nonnull
    T getContent();