element.setAttribute( "ref", getExperimentId( experiment ) );
element.setAttribute( "ref", getExperimentId( experiment ) );
element.setAttribute( "ref", getExperimentId( experiment ) );
element.setAttribute( "id", getExperimentId( experiment ) );
element.setAttribute( "id", getExperimentId( experiment ) );
element.setAttribute( "id", getExperimentId( experiment ) );