During some minimization efforts on the previous released version 28.2-jre, I noticed a spurious file in the published version on maven central:

```
tn@proteus:~/Downloads$ unzip -l guava-28.2-jre.jar  | grep swp
    16384  2019-09-18 17:29   com/google/common/collect/.ImmutableListMultimap.java.swp
```

Looks like an transient artefact from an editor that slipped into the release. It is not present in the android variant or in older releases (I checked at least 28.1-jre).

Minor things that can not be changed anymore but maybe a trigger for improvement of future releases.

Edit: I noticed that 29.0 has been released that does not contain this spurious file.
public abstract class FluentIterable<E> implements Iterable<E> {
  
  
  
  
  
  private final Optional<Iterable<E>> iterableDelegate;
  
  protected FluentIterable() {
    this.iterableDelegate = Optional.absent();
  }
  FluentIterable(Iterable<E> iterable) {
    checkNotNull(iterable);
    this.iterableDelegate = Optional.fromNullable(this != iterable ? iterable : null);
  }
  private Iterable<E> getDelegate() {
    return iterableDelegate.or(this);
  }
  /**
   * Returns a fluent iterable that wraps {@code iterable}, or {@code iterable} itself if it is
   * already a {@code FluentIterable}.
   *
   * <p><b>{@code Stream} equivalent:</b> {@link Collection#stream} if {@code iterable} is a {@link
   * Collection}; {@link Streams#stream(Iterable)} otherwise.
   */
  public static <E> FluentIterable<E> from(final Iterable<E> iterable) {
    return (iterable instanceof FluentIterable)
        ? (FluentIterable<E>) iterable
        : new FluentIterable<E>(iterable) {