interface PluginDefinitionInterface

interface PluginDefinitionInterface {
    
    /**
     * Gets the unique identifier of the plugin.
     *
     * @return string
     *   The unique identifier of the plugin.
     */
    public function id();
    
    /**
     * Sets the class.
     *
     * @param string $class
     *   A fully qualified class name.
     *
     * @return static
     *
     * @throws \InvalidArgumentException
     *   If the class is invalid.
     */
    public function setClass($class);
    
    /**
     * Gets the class.
     *
     * @return string
     *   A fully qualified class name.
     */
    public function getClass();
    
    /**
     * Gets the plugin provider.
     *
     * The provider is the name of the module that provides the plugin, or "core',
     * or "component".
     *
     * @return string
     *   The provider.
     */
    public function getProvider();

}