@java.lang.Override
  public boolean hasDocumentInputConfig() {
    return ((bitField0_ & 0x00000001) != 0);
  }
<pre>
Required. Input configurations.
</pre>

<code>
.google.cloud.translation.v3beta1.DocumentInputConfig document_input_config = 4 [(.google.api.field_behavior) = REQUIRED];
</code>

@return Whether the documentInputConfig field is set.
java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/TranslateDocumentRequest.java