public Builder clearContentLanguage() {
      contentLanguage_ = getDefaultInstance().getContentLanguage();
      bitField0_ = (bitField0_ & ~0x00000004);
      onChanged();
      return this;
    }
<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 This builder for chaining.
java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/PutMetadata.java