code: public T namespaces(Map<String, String> namespaceMappings) {
          getXpathVariableExtractor().getNamespaces().putAll(namespaceMappings);
  
          xmlMessageValidationContext.getNamespaces().putAll(namespaceMappings);
          return self;
      }
docs: Sets default namespace declarations on this action builder.
  @param namespaceMappings
  @return