public Builder clearServiceAccount() {
      if (principalCase_ == 2) {
        principalCase_ = 0;
        principal_ = null;
        onChanged();
      }
      return this;
    }
<pre>
The service account which needs to be granted the permission.
</pre>

<code>string service_account = 2;</code>

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