axiom-compat/src/main/java/org/apache/axiom/om/impl/OMNamespaceImpl.java
mixins/om-mixins/src/main/java/org/apache/axiom/om/impl/common/OMNamespaceImpl.java

axiom-compat/src/main/java/org/apache/axiom/om/impl/OMNamespaceImpl.java
mixins/om-mixins/src/main/java/org/apache/axiom/om/impl/common/DeferredNamespace.java