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