/**
  * A name for the domain you are creating. Allowed characters are a-z (lower-case letters), 0-9,
  * and hyphen (-). Domain names must start with a letter or number and be at least 3 and no more
  * than 28 characters long.
  *
  * @param domainName A name for the domain you are creating. Allowed characters are a-z
  *     (lower-case letters), 0-9, and hyphen (-). Domain names must start with a letter or number
  *     and be at least 3 and no more than 28 characters long.
  * @return Returns a reference to this object so that method calls can be chained together.
  */
 public CreateDomainRequest withDomainName(String domainName) {
   setDomainName(domainName);
   return this;
 }