buildFile << """
            myTask.nested = [(providers.gradleProperty('key').get()): new NestedBean('value1'), key2: new NestedBean('value2')]
        """
        def taskPath = ':myTask'

        when:
        run taskPath, '-Pkey=key1'
        then:
        executedAndNotSkipped taskPath

        when:
        run taskPath, '-Pkey=key1'
        then:
        skipped taskPath

        when:

        VersionCatalogProblemId.TOML_SYNTAX_ERROR
    ])
    def "has multiple TOML parse errors"() {
        enableProblemsApiCheck()

        tomlFile << """
# missing key values
[plugins]
key=
key2=
"""

        when:
        fails 'help'

        then:
        verifyContains(failure.error, parseError {
            inCatalog('libs')

            statement.setString(14, results.getHost());
            statement.setString(15, results.getTeamCityBuildId());
            statement.execute();
            ResultSet keys = statement.getGeneratedKeys();
            keys.next();
            return keys.getLong(1);
        }
    }

    private void insertExecutionExperiment(Connection connection, R results) throws SQLException {

        return self.module(group, name, version);
    }

    @Nullable
    private static String extract(Map<String, CharSequence> map, String key) {
        return map.containsKey(key) ? map.get(key).toString() : null;
    }

    /**
     * Modifies a dependency.
     *
     * @param dependencyNotation dependency to modify
     * @return the modified dependency

        for (K item : keys) {
            destination.put(item, keyGenerator.transform(item));
        }
    }

    /**
     * Given a set of keys, derive a set of values and return a map
     */

        if (number == 0) {
            return;
        }

        // See the distributions' respective `compiler.java` files to see the keys used for localization.
        // We are using the following keys:
        //  - count.error and count.error.plural
        //  - count.warn and count.warn.plural
        StringBuilder keyBuilder = new StringBuilder("count.");

|Configurable directory location, whose value is mutable

|`ListProperty<T>`
|List of elements of type `T`

|`SetProperty<T>`
|Set of elements of type `T`

|`MapProperty<K, V>`
|Map of `K` type keys with `V` type values

|`ConfigurableFileCollection`
|A mutable `FileCollection` which represents a collection of file system locations

|`ConfigurableFileTree`

        infoAttrs += extraAttributes.collectEntries { key, value -> ["e:$key", value] }
        if (writeGradleMetadataRedirection) {
            ivyFileWriter << "<!-- ${MetaDataParser.GRADLE_6_METADATA_MARKER} -->"
        }
        builder.info(infoAttrs) {
            if (extendsFrom) {
                "extends"(extendsFrom)
            }
            extraInfo.each { key, value ->

[[sec:task_output_caching_details]]
== Cacheable tasks

Since a task describes all of its inputs and outputs, Gradle can compute a _build cache key_ that uniquely defines the task's outputs based on its inputs.
That build cache key is used to request previous outputs from a build cache or store new outputs in the build cache.