@java.lang.Override
  public boolean hasCacheControl() {
    return ((bitField0_ & 0x00000010) != 0);
  }
<pre>
Optional. Updates objects Cache-Control fixed metadata. Unset values will
be
 ignored. Set empty values to clear the metadata.
 Additionally, the value for Custom-Time cannot decrease. Refer to
 documentation in
https://cloud.google.com/storage/docs/metadata#caching_data.
</pre>

<code>optional string cache_control = 5 [(.google.api.field_behavior) = OPTIONAL];</code>

@return Whether the cacheControl field is set.
java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/PutMetadata.java