code: protected void removeNode( String workspaceName,
                                 NodeKey key,
                                 NodeKey parentKey,
                                 Path path,
                                 Name primaryType,
                                 Set<Name> mixinTypes ) {
  
      }
docs: Handle the removal of a node.
  
  @param workspaceName the workspace in which the node information should be available; may not be null
  @param key the unique key for the node; may not be null
  @param parentKey the unique key for the parent of the node; may not be null
  @param path the path of the node; may not be null
  @param primaryType the primary type of the node; may not be null
  @param mixinTypes the mixin types for the node; may not be null but may be empty