public void setIdNamespaceArn(String idNamespaceArn) {
        this.idNamespaceArn = idNamespaceArn;
    }
<p>
The Amazon Resource Name (ARN) of the ID namespace.
</p>

@param idNamespaceArn
       The Amazon Resource Name (ARN) of the ID namespace.
aws-java-sdk-entityresolution/src/main/java/com/amazonaws/services/entityresolution/model/GetIdNamespaceResult.java