eventespresso / event-espresso-core

     * @return string

     * @throws InvalidIdentifierException

     */

    private function processIdentifier($identifier)

    {

        if ( ! is_string($identifier)) {

            throw new InvalidIdentifierException(

                is_object($identifier) ? get_class($identifier) : gettype($identifier),

                '\Fully\Qualified\ClassName'

            );

        }

        return ltrim($identifier, '\\');

    }

     * @param  string $identifier Identifier for the entity class that the Recipe applies to

     *                            Typically a Fully Qualified Class Name

     */

    public function setIdentifier($identifier)

    {

        if ( ! is_string($identifier) || empty($identifier)) {

            throw new InvalidIdentifierException(

                is_object($identifier) ? get_class($identifier) : gettype($identifier),

                __('class identifier (typically a \Fully\Qualified\ClassName)', 'event_espresso')

            );

        }

        $this->identifier = $identifier;

    }