基本型端子モデルを表すクラスです。 端子を作成するための基底となる抽象クラスです。 このクラスはOhObjectを 継承しています。 OhPort; OhPort is the base class from which all port classes are derived. It extends OhObject class.
We call an object of class OhPort or classes inherited from class Port a "port". In ohymosj, a port is used for sending and/or receiving datapacks. Basic methods which a port should have are declared. Parts of those basic methods are declared as pure virtual.