UnderlyingType = "~" Type .
</pre>

<p>
An interface type is specified by a list of <i>interface elements</i>.
An interface element is either a <i>method</i> or a <i>type element</i>,
where a type element is a union of one or more <i>type terms</i>.
A type term is either a single type or a single underlying type.
</p>

<h4 id="Basic_interfaces">Basic interfaces</h4>

<p>

pkg archive/zip, type FileHeader struct, UncompressedSize //deprecated
pkg compress/flate, type ReadError //deprecated
pkg compress/flate, type WriteError //deprecated
pkg crypto/rc4, method (*Cipher) Reset //deprecated
pkg crypto/tls, const VersionSSL30 //deprecated
pkg crypto/tls, method (*Config) BuildNameToCertificate //deprecated
pkg crypto/tls, type Config struct, NameToCertificate //deprecated