returns a string representation of the host specifier suitable for inclusion in a uri . if the host specifier is a domain name , the string will be normalized to all lower case . if the specifier was an ipv6 address without brackets , brackets are added so that the result will be usable in the host part of a uri . concode_field_sep String canonicalForm concode_field_sep HostSpecifier fromValid concode_elem_sep int hashCode concode_elem_sep boolean isValid concode_elem_sep boolean equals concode_elem_sep HostSpecifier from