import javax.annotation.Nullable;
import java.util.HashSet;
import java.util.Set;

/**
 * Class used to merge new constants mapping from compiler api results with old results
 */
public class ConstantToDependentsMappingMerger {

    public ConstantToDependentsMapping merge(ConstantToDependentsMapping newMapping, @Nullable ConstantToDependentsMapping oldMapping, Set<String> changedClasses) {
        if (oldMapping == null) {

import spock.lang.Specification

class ConstantToDependentsMappingMergerTest extends Specification {

    private ConstantToDependentsMappingMerger merger = new ConstantToDependentsMappingMerger()

    def "maps new mapping to expected mapping if previous was null"() {
        given:
        ConstantToDependentsMapping newMapping = ConstantToDependentsMapping.builder()

import org.gradle.api.internal.tasks.compile.incremental.compilerapi.constants.ConstantToDependentsMapping;
import org.gradle.api.internal.tasks.compile.incremental.compilerapi.constants.ConstantToDependentsMappingMerger;
import org.gradle.api.internal.tasks.compile.incremental.compilerapi.deps.GeneratedResource;
import org.gradle.api.internal.tasks.compile.incremental.deps.ClassSetAnalysisData;

Class <org.gradle.api.internal.tasks.compile.incremental.compilerapi.constants.ConstantToDependentsMappingMerger> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (ConstantToDependentsMappingMerger.java:0)