return false; // An edge-free graph is acyclic by definition.
    }
    if (!graph.isDirected() && numEdges >= graph.nodes().size()) {
      return true; // Optimization for the undirected case: at least one cycle must exist.
    }

    Map<Object, NodeVisitState> visitedNodes =
        Maps.newHashMapWithExpectedSize(graph.nodes().size());
    for (N node : graph.nodes()) {
      if (subgraphHasCycle(graph, visitedNodes, node)) {

For example, let's say that you want to have a *path operation* that allows to update items, and returns HTTP status codes of 200 "OK" when successful.

But you also want it to accept new items. And when the items didn't exist before, it creates them, and returns an HTTP status code of 201 "Created".

To achieve that, import `JSONResponse`, and return your content there directly, setting the `status_code` that you want:

    if (project.name != "okhttp-testing-support") {
      apply(plugin = "io.github.usefulness.maven-sympathy")
    }
  }

  // Skip samples parent
  if (project.buildFile.exists() && project.name != "okhttp") {
    apply(plugin = "com.android.lint")

    dependencies {
      "lintChecks"(rootProject.libs.androidx.lint.gradle)
    }
  }

  tasks.withType<JavaCompile> {

                    CopyUtil.copy(is, os);
                } catch (final Exception e) {
                    if (tempFile.exists() && !tempFile.delete()) {
                        logger.warn("Failed to delete {}.", tempFile.getAbsolutePath());
                    }
                    logger.debug("Failed to copy {}", filename, e);

            return children.get(name);
        } finally {
            lock.readLock().unlock();
        }
    }

    /**
     * Check if a child exists
     *
     * @param name child name
     * @return true if child exists
     */
    public boolean hasChild(String name) {
        lock.readLock().lock();
        try {
            lastAccessTime = System.currentTimeMillis();

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Outer class that exists solely to let us write {@code Partially.GwtIncompatible} instead of plain
 * {@code GwtIncompatible}. This is more accurate for {@link Futures#catching}, which is available
 * under GWT but with a slightly different signature.
 *

    }
  }

  public void testNoNullValues() {
    for (StandardSystemProperty property : StandardSystemProperty.values()) {
      // Even though the contract in System.getProperties() specifies that a value will exist for
      // all of the listed keys, for some reason the "java.compiler" key returns null in some JVMs.
      if (property == JAVA_COMPILER) {
        continue;
      }
      // Removed in Java 9:

# (error on undefined variables). This ensures that (a) every TFCI variable
# has an explicit default value, and (b) no script can accidentally use a
# variable that doesn't exist. Please keep this list in alphabetical order.
#
# Find usage in scripts with e.g.:
#   cd ci/official
#   ls *.sh utilities/*.sh | xargs grep -H --color=always TFCI_ARG_HERE
# You may also get an overview, e.g.:

bsentity  : base entities
cbean     : condition-beans (both base and extended)
exbhv     : extended behaviors
exentity  : extended entities
- - - - - - - - - -/

For example, if a table called "MEMBER" exists,
you can use these classes like this:
/- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
memberBhv.selectEntity(cb -> {
    cb.query().setMemberId_Equal(3);
}).alwaysPresent(member -> {

    val testCaseDirectory = File(resource.toURI()).toOkioPath()
    val result = mutableListOf<String>()
    for (path in fileSystem.list(testCaseDirectory)) {
      val story00 = path / "story_00.json"
      if (!fileSystem.exists(story00)) continue
      try {
        readStory(story00)
        result.add(path.name)
      } catch (ignored: IOException) {
        // Skip this path.
      }
    }
    return result.toTypedArray<String>()