code: @Override
      public void setStringProperty(String name, String value) throws JMSException {
          setObjectProperty(name, value);
      }
docs: Sets a <code>String</code> property value with the specified name into
  the message.
  
  @param name
  The name of the property to set.
  @param value
  The <code>String</code> value of the property to set.
  @throws JMSException
  On internal error.
  @throws IllegalArgumentException
  If the name or value is null or empty string.
  @throws MessageNotWriteableException
  If properties are read-only.