android/guava/src/com/google/common/cache/CacheBuilder.java
@GwtIncompatible // To be supported
  public static CacheBuilder<Object, Object> from(CacheBuilderSpec spec) {
    return spec.toCacheBuilder().lenientParsing();
  }
@GwtIncompatible // To be supported
  public static CacheBuilder<Object, Object> from(CacheBuilderSpec spec) {
    return spec.toCacheBuilder().lenientParsing();
  }
Constructs a new {@code CacheBuilder} instance with the settings specified in {@code spec}.

@since 12.0