@java.lang.Override
  public boolean containsTrafficSplit(java.lang.String key) {
    if (key == null) {
      throw new NullPointerException("map key");
    }
    return internalGetTrafficSplit().getMap().containsKey(key);
  }
<pre>
A map from a DeployedModel's ID to the percentage of this Endpoint's
traffic that should be forwarded to that DeployedModel.

If a DeployedModel's ID is not listed in this map, then it receives no
traffic.

The traffic percentage values must add up to 100, or map must be empty if
the Endpoint is to not accept any traffic at a moment.
</pre>

<code>map&lt;string, int32&gt; traffic_split = 5;</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Endpoint.java