private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vertexai.api.Tool.CodeExecution,
            com.google.cloud.vertexai.api.Tool.CodeExecution.Builder,
            com.google.cloud.vertexai.api.Tool.CodeExecutionOrBuilder>
        getCodeExecutionFieldBuilder() {
      if (codeExecutionBuilder_ == null) {
        codeExecutionBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vertexai.api.Tool.CodeExecution,
                com.google.cloud.vertexai.api.Tool.CodeExecution.Builder,
                com.google.cloud.vertexai.api.Tool.CodeExecutionOrBuilder>(
                getCodeExecution(), getParentForChildren(), isClean());
        codeExecution_ = null;
      }
      return codeExecutionBuilder_;
    }
<pre>
Optional. CodeExecution tool type.
Enables the model to execute code as part of generation.
</pre>

<code>
.google.cloud.vertexai.v1.Tool.CodeExecution code_execution = 4 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Tool.java