code: public java.util.List<CidrBlock> getCidrBlockSet() {
          if (cidrBlockSet == null) {
              cidrBlockSet = new com.amazonaws.internal.SdkInternalList<CidrBlock>();
          }
          return cidrBlockSet;
      }
docs: <p>
  Information about the IPv4 CIDR blocks for the VPC.
  </p>
  
  @return Information about the IPv4 CIDR blocks for the VPC.