Builder setName(String name) {
      this.name = name;
      return this;
    }
Layer prepared from {@link BuildAndCacheApplicationLayerStep} and {@link
ObtainBaseImageLayerStep} to hold information about either a base image layer or an application
layer.
jib-core/src/main/java/com/google/cloud/tools/jib/builder/steps/PreparedLayer.java