Name to this endpoint&rsquo;s
port, such that traffic to the service port will be forwarded to
the endpoint port that maps to the service&rsquo;s portName. If
omitted, and the targetPort is specified as part of the service&rsquo;s
port specification, traffic to the service port will be forwarded
to one of the endpoints on the specified <code>targetPort</code>. If both
the targetPort and endpoint&rsquo;s port map are not specified, traffic
to a service port will be forwarded to one of the endpoints on
the sa