public static <T extends Collection<?>> T flatten(Object[] elements, T addTo, boolean flattenMaps) {
        return flatten(asList(elements), addTo, flattenMaps);
    }

    public static <T extends Collection<?>> T flatten(Object[] elements, T addTo) {
        return flatten(asList(elements), addTo);
    }

    public static <T extends Collection<?>> T flatten(Collection<?> elements, T addTo) {

        flatten(s4) == [parent.path, "1:dir1", "2:dir2", "2:dir5/and/more", "1:dir6"]

        def s5 = s4.plus(dir1)
        flatten(s5) == [parent.path, "1:dir1", "1:dir6"]

        def s6 = s3.plus(dir1)
        flatten(s6) == [parent.path, "1:dir1", "1:dir6"]

        def s7 = s3.plus(parent)
        flatten(s7) == [parent.path]
    }

    def "has a nice toString representation"() {

    public static <T extends Collection<?>> T flatten(Object[] elements, T addTo, boolean flattenMaps) {
        return flatten(asList(elements), addTo, flattenMaps);
    }

    public static <T extends Collection<?>> T flatten(Object[] elements, T addTo) {
        return flatten(asList(elements), addTo);
    }

    public static <T extends Collection<?>> T flatten(Collection<?> elements, T addTo) {

			continue
		}
		pseudoFilename := fmt.Sprintf("%d: generated from %s", i, "default")

		reader := strings.NewReader(string(rj))
		builder = builder.Stream(reader, pseudoFilename)
	}
	r := builder.Flatten().Do()
	if r.Err() != nil {
		return r.Err()
	}
	visitor := genericclioptions.ResourceFinderForResult(r).Do()
	generatedCrds, generatedDeployments, generatedDaemonSets, err := v.verifyPostInstall(
		visitor,

        }
    }

    private def findLaunchables(Collection<GradleProject> gradleProjects, String taskName) {
        collectGradleProjects(gradleProjects).collect { it.tasks }.flatten().findAll { GradleTask task -> task.path.contains(taskName) }
    }

    private def collectGradleProjects(Collection<GradleProject> projects, Collection<GradleProject> acc = []) {
        acc.addAll(projects)

            elementIfNoFailures {
                fun PropertyAccess.flatten(): List<String> =
                    buildList {
                        if (receiver is PropertyAccess) {
                            addAll(receiver.flatten())
                        }
                        add(name)
                    }

                val nameParts = checked(content!!).flatten()

          <type>String</type>
          <description>pathScope used to flatten dependencies</description>
        </field>
        <field>
          <name>requestType</name>
          <required>false</required>
          <version>2.0.0+</version>
          <type>String</type>
          <description>either {@code collect}, {@code flatten}, or {@code resolve}</description>
        </field>
      </fields>
    </class>

					// updates-collector goroutine still
					// holds a reference to this.
					wg.Wait()
					continue
				}

				wg.Wait()
				// Flatten for upstream, but save full state.
				var root dataUsageEntry
				if r := cache.root(); r != nil {
					root = cache.flatten(*r)
					if root.ReplicationStats.empty() {
						root.ReplicationStats = nil
					}
				}
				select {
				case <-ctx.Done():
					return

                    def walker = services.get(PropertyWalker)
                    TaskPropertyUtils.visitProperties(walker, this, visitor)
                    def inputFiles = visitor.fileProperties*.propertyFiles*.files.flatten()
                    assert inputFiles.empty
                }
            }

            task customTask(type: CustomTask) {
                input = null
            }
        """

        expect:

    }

    /**
     * Recursively unpacks all the given things into a flat list.
     *
     * Nulls are not removed, they are left intact.
     *
     * @param things The things to flatten
     * @return A flattened list of the given things
     */
    public static List<?> flattenCollections(Object... things) {
        return flattenCollections(Object.class, things);
    }

    /**