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(PECL imagick 2, PECL imagick 3)
ImagickDraw::pop — Destroys the current ImagickDraw in the stack, and returns to the previously pushed ImagickDraw
本函数还未编写文档，仅有参数列表。
Destroys the current ImagickDraw in the stack, and returns to the previously pushed ImagickDraw. Multiple ImagickDraws may exist. It is an error to attempt to pop more ImagickDraws than have been pushed, and it is proper form to pop all ImagickDraws which have been pushed.
成功时返回 true， 或者在失败时返回 false。
