import javax.annotation.Nullable;
import java.util.ArrayList;
import java.util.List;

public class DefaultProjectDependencySpec implements ProjectDependencySpec {

    private final String projectPath;
    private final String libraryName;

    public DefaultProjectDependencySpec(String libraryName, String projectPath) {
        if (libraryName == null && projectPath == null) {

        }
        return dependencySpecSet();
    }

    @Override
    public boolean isEmpty() {
        return builders.isEmpty();
    }

    private DefaultProjectDependencySpec.Builder projectDependency() {
        return add(new DefaultProjectDependencySpec.Builder());
    }

    private DefaultModuleDependencySpec.Builder moduleDependency() {
        return add(new DefaultModuleDependencySpec.Builder());
    }

Class <org.gradle.platform.base.internal.DefaultProjectDependencySpec$Builder> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (DefaultProjectDependencySpec.java:0)
Class <org.gradle.platform.base.internal.DefaultProjectDependencySpec> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (DefaultProjectDependencySpec.java:0)