boolean mandatory = true;
                        if (location.startsWith("?")) {
                            mandatory = false;
                            location = location.substring(1);
                        }
                        Path path = configProp.resolveSibling(location);
                        MavenProperties props = loadPropertiesFile(path, mandatory, s -> {

 * This information include the dependency type (main classes, test classes, <i>etc.</i>),
 * a scope (compile-time, run-time <i>etc.</i>), an obligation (whether the dependency
 * is optional or mandatory), and possible exclusions for transitive dependencies.
 * The {@linkplain #getVersionConstraint() version} and the {@linkplain #getOptional() obligation}
 * may not be defined precisely.
 *
 * @since 4.0.0
 */

	Exchange          string   `json:"exchange"`
	RoutingKey        string   `json:"routingKey"`
	ExchangeType      string   `json:"exchangeType"`
	DeliveryMode      uint8    `json:"deliveryMode"`
	Mandatory         bool     `json:"mandatory"`
	Immediate         bool     `json:"immediate"`
	Durable           bool     `json:"durable"`
	Internal          bool     `json:"internal"`
	NoWait            bool     `json:"noWait"`

    /**
     * Returns whether the dependency is optional or mandatory.
     * Contrarily to {@link DependencyCoordinates}, the obligation of a {@code Dependency} is always present.
     * The value is computed during the dependencies collection phase.
     *
     * @return {@code true} if the dependency is optional, or {@code false} if mandatory
     * @see DependencyCoordinates#getOptional()
     */
    boolean isOptional();

	opts     *MonitorReaderOptions
}

// BucketOptions represents the bucket and optionally its replication target pair.
type BucketOptions struct {
	Name           string
	ReplicationARN string // This is optional, and not mandatory.
}

// MonitorReaderOptions provides configurable options for monitor reader implementation.
type MonitorReaderOptions struct {
	BucketOptions
	HeaderSize int
}

// Read implements a throttled read

                in,
                out,
                err,
                coreExtensions);
        this.options = (EncryptOptions) requireNonNull(options);
    }

    /**
     * The mandatory Encrypt options.
     */
    @Nonnull
    public EncryptOptions options() {
        return options;
    }

        // this map is read ONLY to get config from (profiles + env + system + user)
        Map<String, String> mergedProps = createMergedProperties(request);

        // configProps map is kept "pristine", is written ONLY, the mandatory resolver config
        Map<String, Object> configProps = new LinkedHashMap<>();
        configProps.put(ConfigurationProperties.USER_AGENT, getUserAgent());

    private final ModelProblem.Version version;
    private Exception exception;
    private String message;
    private InputLocation location;

    /**
     * Create a new request with mandatory parameters.
     * @param severity
     * @param version
     */
    public ModelProblemCollectorRequest(Severity severity, Version version) {

                rootDirectory,
                in,
                out,
                err,
                coreExtensions);
        this.options = requireNonNull(options);
    }

    /**
     * The mandatory Maven options.
     */
    @Nonnull
    public O options() {
        return options;
    }

 * The version and the obligation may not be defined precisely.</p>
 *
 * <p>{@link org.apache.maven.api.Dependency} instances are the pointed dependencies in the repository.
 * They are created when <dfn>resolving</dfn> a {@code DependencyCoordinates}.
 * Resolving is the process that clarifies the obligation (optional or mandatory status),