repository.put('unkown', new TestDomainObject('unknown'))

        when:
        repository.get('unknown')

        then:
        UnknownDomainObjectException e = thrown()
        e.message == 'No meta-data is available for class \'unknown\'. Did you mean? [unkown]'
    }

    def getFailsForWrongPackage() {
        given:

import org.w3c.dom.Element
/**
 * Generates the docbook source for the DSL reference guide.
 *
 * Uses the following as input:
 * <ul>
 * <li>Meta-data extracted from the source by {@link gradlebuild.docs.dsl.source.ExtractDslMetaDataTask}.</li>
 * <li>Meta-data about the plugins, in the form of an XML file.</li>

import org.w3c.dom.Element
/**
 * Transforms userguide source into docbook, replacing custom XML elements.
 *
 * Takes the following as input:
 * <ul>
 * <li>A source docbook XML file.</li>
 * <li>Meta-info about the canonical documentation for each class referenced in the document, as produced by {@link gradlebuild.docs.dsl.docbook.AssembleDslDocTask}.</li>
 * </ul>
 *
 */
@CacheableTask

import org.gradle.api.tasks.PathSensitive
import org.gradle.api.tasks.PathSensitivity
import org.gradle.api.tasks.SourceTask
import org.gradle.api.tasks.TaskAction

/**
 * Extracts meta-data from the Groovy and Java source files which make up the Gradle API. Persists the meta-data to a file
 * for later use in generating documentation for the DSL, such as by {@link gradlebuild.docs.dsl.docbook.AssembleDslDocTask}.
 */
@CacheableTask

        try {
            ClassMetaData classMetaData = classMetaData.find(className)
            if (!classMetaData) {
                if (!className.contains('.internal.')) {
                    throw new RuntimeException("No meta-data found for class '$className'.")
                }
                classMetaData = new ClassMetaData(className)
            }
            try {