public DescribeUserProfilesRequest withIamUserArns(String... iamUserArns) {
        if (this.iamUserArns == null) {
            setIamUserArns(new com.amazonaws.internal.SdkInternalList<String>(iamUserArns.length));
        }
        for (String ele : iamUserArns) {
            this.iamUserArns.add(ele);
        }
        return this;
    }
<p>
An array of IAM or federated user ARNs that identify the users to be described.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setIamUserArns(java.util.Collection)} or {@link #withIamUserArns(java.util.Collection)} if you want to
override the existing values.
</p>

@param iamUserArns
       An array of IAM or federated user ARNs that identify the users to be described.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-opsworks/src/main/java/com/amazonaws/services/opsworks/model/DescribeUserProfilesRequest.java