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diff --git a/org.argeo.slc.repo/src/org/eclipse/aether/collection/DependencyCollectionContext.java b/org.argeo.slc.repo/src/org/eclipse/aether/collection/DependencyCollectionContext.java
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+++ b/org.argeo.slc.repo/src/org/eclipse/aether/collection/DependencyCollectionContext.java
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+/*******************************************************************************
+ * Copyright (c) 2010, 2013 Sonatype, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Sonatype, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.aether.collection;
+
+import java.util.List;
+
+import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.artifact.Artifact;
+import org.eclipse.aether.graph.Dependency;
+
+/**
+ * A context used during dependency collection to update the dependency manager, selector and traverser.
+ * 
+ * @see DependencyManager#deriveChildManager(DependencyCollectionContext)
+ * @see DependencyTraverser#deriveChildTraverser(DependencyCollectionContext)
+ * @see DependencySelector#deriveChildSelector(DependencyCollectionContext)
+ * @see VersionFilter#deriveChildFilter(DependencyCollectionContext)
+ * @noimplement This interface is not intended to be implemented by clients.
+ * @noextend This interface is not intended to be extended by clients.
+ */
+public interface DependencyCollectionContext
+{
+
+    /**
+     * Gets the repository system session during which the dependency collection happens.
+     * 
+     * @return The repository system session, never {@code null}.
+     */
+    RepositorySystemSession getSession();
+
+    /**
+     * Gets the artifact whose children are to be processed next during dependency collection. For all nodes but the
+     * root, this is simply shorthand for {@code getDependency().getArtifact()}. In case of the root node however,
+     * {@link #getDependency()} might be {@code null} while the node still has an artifact which serves as its label and
+     * is not to be resolved.
+     * 
+     * @return The artifact whose children are going to be processed or {@code null} in case of the root node without
+     *         dependency and label.
+     */
+    Artifact getArtifact();
+
+    /**
+     * Gets the dependency whose children are to be processed next during dependency collection.
+     * 
+     * @return The dependency whose children are going to be processed or {@code null} in case of the root node without
+     *         dependency.
+     */
+    Dependency getDependency();
+
+    /**
+     * Gets the dependency management information that was contributed by the artifact descriptor of the current
+     * dependency.
+     * 
+     * @return The dependency management information, never {@code null}.
+     */
+    List<Dependency> getManagedDependencies();
+
+}