code: public Relation relation(JcRelation relation) {
  		PatternExpression px = (PatternExpression)this.astNode;
  		PatternRelation pr = new PatternRelation(relation);
  		px.addElement(pr);
  		Relation ret = new Relation(px);
  		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>match or create (depends on the clause) relations connected to the node,
  <br/>make them accessible by a JcRelation element later on in the query</i></div>
  <div color='red' style="font-size:18px;color:red"><i>e.g. MATCH.node(n).<b>relation(r)</b></i></div>
  <br/>