(PECL imagick 2.0.0)
ImagickDraw::push — Clones the current ImagickDraw and pushes it to the stack
本函数还未编写文档，仅有参数列表。
Clones the current ImagickDraw to create a new ImagickDraw, which is then added to the ImagickDraw stack. The original drawing ImagickDraw(s) may be returned to by invoking pop(). The ImagickDraws are stored on a ImagickDraw stack. For every Pop there must have already been an equivalent Push.
成功时返回 TRUE， 或者在失败时返回 FALSE。