Method fromNullable

corpus/java/training/guava/base/Optional.java:117–121

If nullableReference is non-null, returns an Optional instance containing that reference; otherwise returns Optional#absent. Comparison to java.util.Optional: this method is equivalent to Java 8's Optional.ofNullable.

(@Nullable T nullableReference)

   * {@code Optional.ofNullable}.
   */
  public static <T> Optional<T> fromNullable(@Nullable T nullableReference) {
    return (nullableReference == null)
        ? Optional.<T>absent()
        : new Present<T>(nullableReference);
  }

  Optional() {}