code: public java.util.List<UserIdGroupPair> getUserIdGroupPairs() {
          if (userIdGroupPairs == null) {
              userIdGroupPairs = new com.amazonaws.internal.SdkInternalList<UserIdGroupPair>();
          }
          return userIdGroupPairs;
      }
docs: <p>
  The security group pairs. Returns the ID of the referenced security group and VPC, and the ID and status of the
  VPC peering connection.
  </p>
  
  @return The security group pairs. Returns the ID of the referenced security group and VPC, and the ID and status
  of the VPC peering connection.