private com.google.protobuf.RepeatedFieldBuilderV3<
              com.google.cloud.vertexai.api.ModalityTokenCount,
              com.google.cloud.vertexai.api.ModalityTokenCount.Builder,
              com.google.cloud.vertexai.api.ModalityTokenCountOrBuilder>
          getCacheTokensDetailsFieldBuilder() {
        if (cacheTokensDetailsBuilder_ == null) {
          cacheTokensDetailsBuilder_ =
              new com.google.protobuf.RepeatedFieldBuilderV3<
                  com.google.cloud.vertexai.api.ModalityTokenCount,
                  com.google.cloud.vertexai.api.ModalityTokenCount.Builder,
                  com.google.cloud.vertexai.api.ModalityTokenCountOrBuilder>(
                  cacheTokensDetails_,
                  ((bitField0_ & 0x00000020) != 0),
                  getParentForChildren(),
                  isClean());
          cacheTokensDetails_ = null;
        }
        return cacheTokensDetailsBuilder_;
      }
<pre>
Output only. List of modalities of the cached content in the request
input.
</pre>

<code>
repeated .google.cloud.vertexai.v1.ModalityTokenCount cache_tokens_details = 10 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/GenerateContentResponse.java