});
    }

    private static <T> Map<AccessorKey, T> diff(Map<AccessorKey, T> first, Map<AccessorKey, T> second) {
        return first.entrySet().stream()
            .filter(e -> !second.containsKey(e.getKey()))
            .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
    }

    private
    val steps = BuildSteps()

    private
    val buildModel = CIBuildModel(
        projectId = "Gradle_Check",
        branch = VersionedSettingsBranch("master"),
        buildScanTags = listOf("Check"),
        subprojects = JsonBasedGradleSubprojectProvider(File("../.teamcity/subprojects.json"))
    )

    @BeforeEach
    fun setUp() {

                // Flatten adocs into a single directory
                sub.eachFile(fcd -> fcd.setRelativePath(RelativePath.parse(true, fcd.getName())));
            });

            // From the snippets and the samples, filter out files generated if the build contained was ever executed
            task.from(extension.getUserManual().getSnippets(), sub -> {
                sub.into("snippets");
                sub.exclude("**/.gradle/**");

name: Contributor CI Build

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master

concurrency:
  # On master/release, we don't want any jobs cancelled so the sha is used to name the group
  # On PR branches, we cancel the job if new commits are pushed

import java.io.FilterReader;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;

/**
 * Deeply opinionated file filter that adds elements to the release notes HTML page.
 */
public class ReleaseNotesTransformer extends FilterReader {
    private File baseCss;
    private File releaseNotesCss;
    private File releaseNotesJavascript;

        gradle.taskGraph.whenReady {
            val buildService: Provider<T> = gradle.sharedServices.registerIfAbsent("${klass.simpleName}-$rootProjectName", klass) {
                parameters.monitoredTaskPaths = allTasks.filter(taskFilter).map { if (isInBuildLogic) ":build-logic${it.path}" else it.path }.toSet()
            }
            gradle.serviceOf<BuildEventsListenerRegistry>().onTaskCompletion(buildService)

and test another isolated pipeline from any branch. 

We'll explain everything via an example. Let's say you make some changes on your branch `myTestBranch`
(we highly recommend to name this branch without prefix and hyphen (`-`) because it's used to generate build type ID) and want to
test these changes without affecting `master`/`release` pipeline. Here are the instructions.

 * @example {{ owners | categorize(branch.diff.files_metadata) | computeStatistics(branch.diff.files_metadata) | summaryTable('Platform') }}
 */
function summaryTable(statistics, title) {
    let preppedStatistics = statistics.filter(s => s.files.length > 0)
        .sort(s => -(s.additions + s.deletions));

    let totalAdditions = Object.values(preppedStatistics).reduce((acc, summary) => acc + summary.additions, 0);

    const checksPart = inputString.split('@bot-gitstream check');
    if (checksPart.length === 2) {
        const checks = checksPart[1].split(' ');
        const namePattern = /^[a-zA-Z_]+$/;
        return checks.filter(check => namePattern.test(check));
    } else {
        return [];
    }
}

* Join our [Slack Channel](https://gradle.com/slack-invite)


## Contributing

If you're looking to contribute to Gradle or provide a patch/pull request, you can find more info [here](https://github.com/gradle/gradle/blob/master/CONTRIBUTING.md).