Iterable<String> list = Lists.newArrayList("cool", "pants");
    Iterator<String> iterator = list.iterator();
    assertEquals("pants", Iterators.find(iterator, Predicates.equalTo("pants")));
    assertFalse(iterator.hasNext());
  }

  public void testFind_notPresent() {
    Iterable<String> list = Lists.newArrayList("cool", "pants");
    Iterator<String> iterator = list.iterator();
    try {

    Iterable<String> list = Lists.newArrayList("cool", "pants");
    Iterator<String> iterator = list.iterator();
    assertEquals("pants", Iterators.find(iterator, Predicates.equalTo("pants")));
    assertFalse(iterator.hasNext());
  }

  public void testFind_notPresent() {
    Iterable<String> list = Lists.newArrayList("cool", "pants");
    Iterator<String> iterator = list.iterator();
    try {

    assertTrue(Iterables.all(list, predicate));
    list.add("pants");
    assertFalse(Iterables.all(list, predicate));
  }

  public void testFind() {
    Iterable<String> list = newArrayList("cool", "pants");
    assertEquals("cool", Iterables.find(list, Predicates.equalTo("cool")));
    assertEquals("pants", Iterables.find(list, Predicates.equalTo("pants")));
    try {
      Iterables.find(list, Predicates.alwaysFalse());

    list.add("pants");
    assertFalse(iterable.allMatch(predicate));
  }

  public void testFirstMatch() {
    FluentIterable<String> iterable = FluentIterable.from(Lists.newArrayList("cool", "pants"));
    assertThat(iterable.firstMatch(Predicates.equalTo("cool"))).hasValue("cool");
    assertThat(iterable.firstMatch(Predicates.equalTo("pants"))).hasValue("pants");

    assertTrue(Iterables.all(list, predicate));
    list.add("pants");
    assertFalse(Iterables.all(list, predicate));
  }

  public void testFind() {
    Iterable<String> list = newArrayList("cool", "pants");
    assertEquals("cool", Iterables.find(list, Predicates.equalTo("cool")));
    assertEquals("pants", Iterables.find(list, Predicates.equalTo("pants")));
    try {
      Iterables.find(list, Predicates.alwaysFalse());

    list.add("pants");
    assertFalse(iterable.allMatch(predicate));
  }

  public void testFirstMatch() {
    FluentIterable<String> iterable = FluentIterable.from(Lists.newArrayList("cool", "pants"));
    assertThat(iterable.firstMatch(Predicates.equalTo("cool"))).hasValue("cool");
    assertThat(iterable.firstMatch(Predicates.equalTo("pants"))).hasValue("pants");

        checkNotNull(appendable, "appendable");
        checkNotNull(parts, "parts");
        while (parts.hasNext()) {
          Object part = parts.next();
          if (part != null) {
            appendable.append(Joiner.this.toString(part));
            break;
          }
        }
        while (parts.hasNext()) {
          Object part = parts.next();

        }
      };

  private static void checkResult(Joiner joiner, Iterable<Integer> parts, String expected) {
    assertEquals(expected, joiner.join(parts));
    assertEquals(expected, joiner.join(parts.iterator()));

    StringBuilder sb1FromIterable = new StringBuilder().append('x');
    joiner.appendTo(sb1FromIterable, parts);
    assertEquals("x" + expected, sb1FromIterable.toString());

import java.io.Serializable;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * An immutable {@code Map.Entry}, used both by {@link
 * com.google.common.collect.Maps#immutableEntry(Object, Object)} and by other parts of {@code
 * common.collect} as a superclass.
 */
@GwtCompatible(serializable = true)
@ElementTypesAreNonnullByDefault
class ImmutableEntry<K extends @Nullable Object, V extends @Nullable Object>

      @ParametricNullness E fromElement,
      BoundType fromBoundType,
      @ParametricNullness E toElement,
      BoundType toBoundType) {
    // These are checked elsewhere, but NullPointerTester wants them checked eagerly.
    checkNotNull(fromBoundType);
    checkNotNull(toBoundType);
    return tailMultiset(fromElement, fromBoundType).headMultiset(toElement, toBoundType);
  }