code: public Object getParameter(String name)
    {
  
      if (null == m_params)
        return null;
  
      return m_params.get(name);
    }
docs: Get a parameter that was explicitly set with setParameter
  or setParameters.
  
  <p>This method does not return a default parameter value, which
  cannot be determined until the node context is evaluated during
  the transformation process.
  
  
  @param name Name of the parameter.
  @return A parameter that has been set with setParameter.