private void ensureSourceIpRangesIsMutable() {
      if (!((bitField0_ & 0x00000080) != 0)) {
        sourceIpRanges_ =
            new java.util.ArrayList<com.google.cloud.vmwareengine.v1.ExternalAccessRule.IpRange>(
                sourceIpRanges_);
        bitField0_ |= 0x00000080;
      }
    }
<pre>
The IP protocol to which the external access rule applies. This value can
be one of the following three protocol strings (not case-sensitive):
`tcp`, `udp`, or `icmp`.
</pre>

<code>string ip_protocol = 8;</code>

@param value The bytes for ipProtocol to set.
@return This builder for chaining.
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ExternalAccessRule.java