*/
@GwtCompatible
public final class TesterRequirements {
  private final Set<Feature<?>> presentFeatures;
  private final Set<Feature<?>> absentFeatures;

  public TesterRequirements(Set<Feature<?>> presentFeatures, Set<Feature<?>> absentFeatures) {
    this.presentFeatures = copyToSet(presentFeatures);
    this.absentFeatures = copyToSet(absentFeatures);
  }

  public TesterRequirements(TesterRequirements tr) {

   */
  static TesterRequirements buildTesterRequirements(Method testerMethod)
      throws ConflictingRequirementsException {
    TesterRequirements clonedClassRequirements =
        new TesterRequirements(getTesterRequirements(testerMethod.getDeclaringClass()));
    TesterRequirements declaredRequirements = buildDeclaredTesterRequirements(testerMethod);

   */
  static TesterRequirements buildTesterRequirements(Method testerMethod)
      throws ConflictingRequirementsException {
    TesterRequirements clonedClassRequirements =
        new TesterRequirements(getTesterRequirements(testerMethod.getDeclaringClass()));
    TesterRequirements declaredRequirements = buildDeclaredTesterRequirements(testerMethod);

    class Tester {}

    TesterRequirements requirements = buildTesterRequirements(Tester.class);

    assertThat(requirements.getPresentFeatures()).isEmpty();
    assertThat(requirements.getAbsentFeatures()).isEmpty();
  }

  public void testBuildTesterRequirements_class_empty() throws Exception {
    @Require
    class Tester {}

    TesterRequirements requirements = buildTesterRequirements(Tester.class);

import com.google.common.collect.testing.features.Feature;
import com.google.common.collect.testing.features.FeatureUtil;
import com.google.common.collect.testing.features.TesterRequirements;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.HashSet;