public Chemicals getLigand ( ) { if ( GeneRegulationTemplate_Type . featOkTst && ( ( GeneRegulationTemplate_Type ) jcasType ) . casFeat_ligand == null ) jcasType . jcas . throwFeatMissing ( "ligand" , "de.julielab.jules.types.bootstrep.GeneRegulationTemplate" ) ; return ( Chemicals ) ( jcasType . ll_cas . ll_getFSForRef ( jcasType . ll_cas . ll_getRefValue ( addr , ( ( GeneRegulationTemplate_Type ) jcasType ) . casFeatCode_ligand ) ) ) ; }
getter for ligand - gets chemical particpating in the gene regulation process