public Builder clearBootOption() {
      bitField0_ = (bitField0_ & ~0x00004000);
      bootOption_ = 0;
      onChanged();
      return this;
    }
<pre>
The VM Boot Option, as set in the source vm.
</pre>

<code>.google.cloud.vmmigration.v1.ComputeEngineBootOption boot_option = 15;</code>

@return This builder for chaining.
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ComputeEngineTargetDetails.java