}

  @GwtIncompatible // GWT reflection includes less data
  public void testLenientFormat_badArgumentToString() {
    assertThat(Strings.lenientFormat("boiler %s plate", new ThrowsOnToString()))
        .matches(
            // J2kt nested class name does not use "$"
            "boiler <com\\.google\\.common\\.base\\.StringsTest[.$]ThrowsOnToString@[0-9a-f]+ "
                + "threw java\\.lang\\.UnsupportedOperationException> plate");
  }

    return new Joiner(separator);
  }

  /** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(char separator) {
    return new Joiner(String.valueOf(separator));
  }

  private final String separator;

  private Joiner(String separator) {
    this.separator = checkNotNull(separator);
  }

  private Joiner(Joiner prototype) {

    return new Joiner(separator);
  }

  /** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(char separator) {
    return new Joiner(String.valueOf(separator));
  }

  private final String separator;

  private Joiner(String separator) {
    this.separator = checkNotNull(separator);
  }

  private Joiner(Joiner prototype) {

/**
 * <p>
 * A {@link Builder} encapsulates a strategy for building a set of Maven projects. The default strategy in Maven builds
 * the projects serially, but a {@link Builder} can employ any type of concurrency model to build the projects.
 * </p>
 * <strong>Note:</strong> This interface is part of work in progress and can be changed or removed without notice.
 */
public interface Builder {
    //

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)

       * this check to isAccessible().
       */
      if (!field.isSynthetic() && field.getType() == String.class) {
        builder.add(field);
      }
    }
    return builder.build();
  }

  private static final Splitter SPLITTER = Splitter.on('_');
  private static final Joiner JOINER = Joiner.on('-');

  private static String upperToHttpHeaderName(
      String constantName,
      ImmutableBiMap<String, String> specialCases,

  static ImmutableMap<String, PublicSuffixType> parseFullString(String encoded) {
    ImmutableMap.Builder<String, PublicSuffixType> builder = ImmutableMap.builder();
    int encodedLen = encoded.length();
    int idx = 0;

    while (idx < encodedLen) {
      idx += doParseTrieToBuilder(newArrayDeque(), encoded, idx, builder);
    }

    return builder.buildOrThrow();
  }

  /**

  static ImmutableMap<String, PublicSuffixType> parseFullString(String encoded) {
    ImmutableMap.Builder<String, PublicSuffixType> builder = ImmutableMap.builder();
    int encodedLen = encoded.length();
    int idx = 0;

    while (idx < encodedLen) {
      idx += doParseTrieToBuilder(newArrayDeque(), encoded, idx, builder);
    }

    return builder.buildOrThrow();
  }

  /**

    abstract Type usedInGenericType(Type type);

    final ImmutableList<Type> usedInGenericType(Type[] types) {
      ImmutableList.Builder<Type> builder = ImmutableList.builder();
      for (Type type : types) {
        builder.add(usedInGenericType(type));
      }
      return builder.build();
    }

    String typeName(Type type) {
      return Types.toString(type);
    }

  // key will lead to an immediate exception. If it is not null then a duplicate key will instead be
  // stored in the builder, which may use it to throw an exception later.
  static <K, V> RegularImmutableMap<K, V> create(
      int n, @Nullable Object[] alternatingKeysAndValues, @Nullable Builder<K, V> builder) {
    if (n == 0) {
      @SuppressWarnings("unchecked")