code: public static ModifyTerminal SET(JcLabel label) {
  		ModifyTerminal ret = ModifyFactory.setLabel(label);
  		ASTNode an = APIObjectAccess.getAstNode(ret);
  		an.setClauseType(ClauseType.ON_MATCH_SET);
  		return ret;
  	}
docs: <div color='red' style="font-size:24px;color:red"><b><i><u>JCYPHER</u></i></b></div>
  <div color='red' style="font-size:18px;color:red"><i>set a label of a node in an ON_MATCH clause</i></div>
  <div color='red' style="font-size:18px;color:red"><i>e.g. ...<b>SET(n.label("Person"))</b></i></div>
  <br/>