public boolean hasContentLanguage() {
      return ((bitField0_ & 0x00000004) != 0);
    }
<pre>
Optional. Updates objects Content-Language fixed metadata. Refer to ISO
639-1 language codes for typical values of this metadata. Max length 100
characters. Unset values will be ignored. Set empty values to clear the
metadata. Refer to documentation in
https://cloud.google.com/storage/docs/metadata#content-language.
</pre>

<code>optional string content_language = 3 [(.google.api.field_behavior) = OPTIONAL];</code>

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