/**
 * Ways to continue visiting a snapshot hierarchy after an entry has been visited.
 *
 * @see java.nio.file.FileVisitResult
 */
public enum SnapshotVisitResult {

    /**
     * Continue visiting. When returned after visiting a directory,
     * the entries in the directory will be visited next.
     */
    CONTINUE,

    /**
     * Terminate visiting immediately.
     */
    TERMINATE,

                cycle.removeLast();
                stateMap.put(v, DfsState.VISITED);
            } else if (state == DfsState.VISITING) {
                // we are already visiting this vertex, this mean we have a cycle
                int pos = cycle.lastIndexOf(v.label);
                List<String> ret = cycle.subList(pos, cycle.size());
                ret.add(v.label);
                return ret;
            }
        }

    /**
     * Called when starting to visit a file collection. Can return true to continue with visiting or false to skip this collection and its contents.
     *
     * <p>When a file collection represents a container of file collections, the children of the file collection are visited in order. Visiting a child works in the

                    stateMap.put(v, DfsState.VISITED);
                } else if (state == DfsState.VISITING) {
                    // we are already visiting this vertex, this mean we have a cycle
                    int pos = cycle.lastIndexOf(v);
                    List<String> ret = cycle.subList(pos, cycle.size());
                    ret.add(v);
                    return ret;
                }
            }
        }

                cycle.removeLast();
                stateMap.put(v, DfsState.VISITED);
            } else if (state == DfsState.VISITING) {
                // we are already visiting this vertex, this mean we have a cycle
                int pos = cycle.lastIndexOf(v.label);
                List<String> ret = cycle.subList(pos, cycle.size());
                ret.add(v.label);
                return ret;
            }
        }

                    stateMap.put(v, DfsState.VISITED);
                } else if (state == DfsState.VISITING) {
                    // we are already visiting this vertex, this mean we have a cycle
                    int pos = cycle.lastIndexOf(v);
                    List<String> ret = cycle.subList(pos, cycle.size());
                    ret.add(v);
                    return ret;
                }
            }
        }

// and returns true if visiting should continue.
type ContainerVisitorWithPath func(container *api.Container, path *field.Path) bool

// VisitContainersWithPath invokes the visitor function with a pointer to the spec
// of every container in the given pod spec and the field.Path to that container.
// If visitor returns false, visiting is short-circuited. VisitContainersWithPath returns true if visiting completes,

    /**
     * Called before visiting the contents of a directory.
     */
    default void enterDirectory(DirectorySnapshot directorySnapshot, RelativePathSupplier relativePath) {}

    /**
     * Called for each regular file/directory/missing/unavailable file.
     *
     * @return how to continue visiting the rest of the snapshot hierarchy.
     */

 */
public interface FileSystemSnapshotHierarchyVisitor {

    /**
     * Called before visiting the contents of a directory.
     */
    default void enterDirectory(DirectorySnapshot directorySnapshot) {}

    /**
     * Called for each regular file/directory/missing/unavailable file.
     *
     * @return how to continue visiting the rest of the snapshot hierarchy.
     */

import org.gradle.internal.component.local.model.LocalFileDependencyMetadata;

public interface DependencyArtifactsVisitor {
    /**
     * Visits a node in the graph. All nodes are visited prior to visiting the edges
     */
    default void visitNode(DependencyGraphNode node) {}

    /**
     * Visits the artifacts introduced by a particular edge in the graph. Called for every edge in the graph.