code: public void setAttributeMap( Map savedAttrs )
      {
          assert savedAttrs != null : "Map of attributes must be non-null";
  
          Map currentAttrs = _scopedContainer.getAttrMap();
  
          Map attrs = new HashMap();
          attrs.putAll( savedAttrs );
  
          if ( currentAttrs != null )
          {
              attrs.putAll( currentAttrs );
          }
  
          _scopedContainer.setAttrMap( attrs  );
      }
docs: Set/merge the map of request attributes from a given map.
  Do not call this method with a null Map.
  
  @param savedAttrs the Map of attributes to set or merge with
  the current map of request attributes