* NullPointerTester}, {@link EqualsTester} and {@link SerializableTester}. For example:
 *
 * <pre>
 * public class PackageSanityTests extends AbstractPackageSanityTests {}
 * </pre>
 *
 * <p>Note that only top-level classes with either a non-private constructor or a non-private static
 * factory method to construct instances can have their instance methods checked. For example:
 *
 * <pre>
 * public class Address {

    /** targetRole */
    protected String targetRole;

    /** updatedBy */
    protected String updatedBy;

    /** updatedTime */
    protected Long updatedTime;

    // [Referrers] *comment only

    // ===================================================================================
    //                                                                             DB Meta

    /** lastAccessTime */
    protected Long lastAccessTime;

    /** threadName */
    protected String threadName;

    /** url */
    protected String url;

    // [Referrers] *comment only

    // ===================================================================================
    //                                                                             DB Meta

    /** updatedBy */
    protected String updatedBy;

    /** updatedTime */
    protected Long updatedTime;

    /** virtualHost */
    protected String virtualHost;

    // [Referrers] *comment only

    // ===================================================================================
    //                                                                             DB Meta

    /** updatedTime */
    protected Long updatedTime;

    /** value */
    protected String value;

    /** webConfigId */
    protected String webConfigId;

    // [Referrers] *comment only

    // ===================================================================================
    //                                                                             DB Meta

        if (accessTokenPager.id != null) {
            cb.query().docMeta().setId_Equal(accessTokenPager.id);
        }
        // TODO Long, Integer, String supported only.

        // setup condition
        cb.query().addOrderBy_Name_Asc();
        cb.query().addOrderBy_CreatedTime_Asc();

        // search

    }

 * {@link com.google.common.collect.testing.MapTestSuiteBuilder}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@IgnoreJRERequirement // We opt into library desugaring for our tests.

 * there are multiple occurrences of elements.
 *
 * @author Louis Wasserman
 */
@GwtCompatible(emulated = true)
@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@ElementTypesAreNonnullByDefault

import java.util.NavigableSet;
import java.util.Set;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A skeleton implementation of a descending multiset. Only needs {@code forwardMultiset()} and
 * {@code entryIterator()}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault

   * that conversion is safe.
   *
   * <p>This method is intended to help with usages of type parameters that have {@linkplain
   * ParametricNullness parametric nullness}. If a type parameter instead ranges over only non-null
   * types (or if the type is a non-variable type, like {@code String}), then code should almost
   * never use this method, preferring instead to call {@code requireNonNull} so as to benefit from
   * its runtime check.