@java.lang.Override
    public com.google.cloud.vmwareengine.v1.NodeTypeConfig getNodeTypeConfigsOrThrow(
        java.lang.String key) {
      if (key == null) {
        throw new NullPointerException("map key");
      }
      java.util.Map<java.lang.String, com.google.cloud.vmwareengine.v1.NodeTypeConfigOrBuilder>
          map = internalGetMutableNodeTypeConfigs().ensureBuilderMap();
      if (!map.containsKey(key)) {
        throw new java.lang.IllegalArgumentException();
      }
      return nodeTypeConfigsConverter.build(map.get(key));
    }
<pre>
Required. The map of cluster node types in this cluster, where the key is
canonical identifier of the node type (corresponds to the `NodeType`).
</pre>

<code>
map&lt;string, .google.cloud.vmwareengine.v1.NodeTypeConfig&gt; node_type_configs = 16 [(.google.api.field_behavior) = REQUIRED];
</code>
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/Cluster.java