n jakarta.xml.soap">SOAPElement</a>&nbsp;addNamespaceDeclaration(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;prefix,
                                    <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;uri)
                             throws <a href="../../../jakarta/xml/soap/SOAPException.html" title="class 