@domain_name.setter<EOL><INDENT>def domain_name(self, domain_name):<DEDENT>
if domain_name is None:<EOL><INDENT>raise ValueError("<STR_LIT>")<EOL><DEDENT>if len(domain_name) > <NUM_LIT:255>:<EOL><INDENT>raise ValueError("<STR_LIT>")<EOL><DEDENT>if len(domain_name) < <NUM_LIT:1>:<EOL><INDENT>raise ValueError("<STR_LIT>")<EOL><DEDENT>self._domain_name = domain_name<EOL>
Sets the domain_name of this RegisterDomainRequest.
A domain name as described in RFC-1034 that will be registered with ApplePay

:param domain_name: The domain_name of this RegisterDomainRequest.
:type: str