public void setInclude(java.util.Collection<String> include) {
        if (include == null) {
            this.include = null;
            return;
        }

        this.include = new java.util.ArrayList<String>(include);
    }
<p>
Indicates whether external clusters are included in the returned list. Use '<code>all</code>' to return <a
href="https://docs.aws.amazon.com/eks/latest/userguide/eks-connector.html"
>https://docs.aws.amazon.com/eks/latest/userguide/eks-connector.html</a>connected clusters, or blank to return
only Amazon EKS clusters. '<code>all</code>' must be in lowercase otherwise an error occurs.
</p>

@param include
       Indicates whether external clusters are included in the returned list. Use '<code>all</code>' to return <a
       href
       ="https://docs.aws.amazon.com/eks/latest/userguide/eks-connector.html">https://docs.aws.amazon.com/eks/
       latest/userguide/eks-connector.html</a>connected clusters, or blank to return only Amazon EKS clusters. '
       <code>all</code>' must be in lowercase otherwise an error occurs.
aws-java-sdk-eks/src/main/java/com/amazonaws/services/eks/model/ListClustersRequest.java