docs: public void setVpcPeeringConnections(java.util.Collection<VpcPeeringConnection> vpcPeeringConnections) {
          if (vpcPeeringConnections == null) {
              this.vpcPeeringConnections = null;
              return;
          }
  
          this.vpcPeeringConnections = new java.util.ArrayList<VpcPeeringConnection>(vpcPeeringConnections);
      }