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  | Quintiq file version 2.0 
 |  #parent: #root 
 |  DeclarativeReferenceRelation CalcAsOutputPISPNodeInRouting 
 |  { 
 |    #keys: '1[113694.1.1980628017]' 
 |    Expression: 
 |    [* 
 |      routing := null( Routing ); 
 |       
 |      if( isnull( this.AsInputPISPNodeInRouting() ) 
 |          and exists( this, OperationInputOutput, oio, oio.istype( OperationOutput ) ) ) 
 |      { 
 |        routing := this.Routing(); 
 |      } 
 |       
 |      return routing; 
 |    *] 
 |    Relation: AsOutputPISPNodeInRouting 
 |  } 
 |  
  |