private void buildPartial0(com.google.cloud.vertexai.api.ApiAuth.ApiKeyConfig result) {
        int from_bitField0_ = bitField0_;
        if (((from_bitField0_ & 0x00000001) != 0)) {
          result.apiKeySecretVersion_ = apiKeySecretVersion_;
        }
      }
<pre>
The API secret.
</pre>

Protobuf type {@code google.cloud.vertexai.v1.ApiAuth.ApiKeyConfig}
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/ApiAuth.java