Most source code in Gradle is arranged by which part(s) of the build state model it acts on.
This affects the lifecycle of the code and the set of services available for dependency injection.
When working on some source code it is important to be aware of the model it acts on.  

import gradlebuild.docs.dsl.source.model.ClassMetaData
import gradlebuild.docs.dsl.source.model.MethodMetaData
import gradlebuild.docs.dsl.source.model.ParameterMetaData
import gradlebuild.docs.dsl.source.model.PropertyMetaData
import gradlebuild.docs.dsl.source.model.TypeMetaData
import gradlebuild.docs.dsl.docbook.model.ClassExtensionMetaData
import gradlebuild.docs.dsl.docbook.model.PropertyDoc

    public ClassDocBuilder(DslDocModel model, JavadocConverter javadocConverter) {
        commentBuilder = new ClassDocCommentBuilder(javadocConverter, listener);
        propertiesBuilder = new ClassDocPropertiesBuilder(javadocConverter, listener);
        methodsBuilder = new ClassDocMethodsBuilder(javadocConverter, listener);
        extensionsBuilder = new ClassDocExtensionsBuilder(model, listener);

        return "SubprojectTestClassTime(subProject=${subProject.name}, totalTime=$totalTime)"
    }
}

class FunctionalTestBucketGenerator(private val model: CIBuildModel, testTimeDataJson: File) {
    private val buckets: Map<TestCoverage, List<SmallSubprojectBucket>> = buildBuckets(testTimeDataJson, model)

    fun generate(jsonFile: File) {
        jsonFile.writeText(
            JSON.toJSONString(
                buckets.map {

 * limitations under the License.
 */

package gradlebuild.binarycompatibility.rules

import groovy.transform.CompileStatic
import japicmp.model.JApiCompatibility
import japicmp.model.JApiConstructor
import japicmp.model.JApiField
import japicmp.model.JApiMethod
import javassist.CtBehavior
import javassist.CtField
import javassist.CtMethod
import javassist.Modifier

import common.uuidPrefix
import jetbrains.buildServer.configs.kotlin.DslContext
import model.CIBuildModel

class PartialTrigger<T : BaseGradleBuildType>(triggerName: String, triggerId: String, model: CIBuildModel, dependencies: Iterable<T>) : BaseGradleBuildType(init = {
    id("${model.projectId}_${triggerId}_Trigger")
    uuid = "${DslContext.uuidPrefix}_${model.projectId}_${triggerId}_Trigger"
    name = "$triggerName (Trigger)"

 * limitations under the License.
 */

package gradlebuild.binarycompatibility.rules;

import japicmp.model.JApiClass;
import japicmp.model.JApiCompatibility;
import japicmp.model.JApiField;
import japicmp.model.JApiHasAnnotations;
import japicmp.model.JApiMethod;
import me.champeau.gradle.japicmp.report.Violation;

import java.util.Map;

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package gradlebuild.docs.dsl.docbook.model

import gradlebuild.docs.dsl.source.model.PropertyMetaData
import org.w3c.dom.Element
import gradlebuild.docs.dsl.source.model.ClassMetaData

class PropertyDoc implements DslElementDoc {
    private final String id
    private final String name

 * limitations under the License.
 */

package gradlebuild.docs.dsl.docbook;

import gradlebuild.docs.dsl.docbook.model.ClassDoc;
import gradlebuild.docs.dsl.docbook.model.ExtraAttributeDoc;
import gradlebuild.docs.dsl.docbook.model.PropertyDoc;
import gradlebuild.docs.dsl.source.model.PropertyMetaData;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.Text;
import org.gradle.api.logging.Logger;

import jetbrains.buildServer.configs.kotlin.Project
import model.CIBuildModel
import model.PerformanceTestBucketProvider
import model.PerformanceTestCoverage
import model.PerformanceTestProjectSpec
import model.Stage

abstract class PerformanceTestProject(model: CIBuildModel, val spec: PerformanceTestProjectSpec, val performanceTests: List<PerformanceTest>) : Project({
    this.id(spec.asConfigurationId(model))
    this.name = spec.asName()
}) {
    init {