public static Builder newBuilder(com.google.cloud.tpu.v2alpha1.ServiceIdentity prototype) {
    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
  }
<pre>
The email address of the service identity.
</pre>

<code>string email = 1;</code>

@return The bytes for email.
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/ServiceIdentity.java