(PECL imagick 2, PECL imagick 3)
ImagickDraw::pushDefs — Indicates that following commands create named elements for early processing
本函數還未編寫(xiě)文檔，僅有參數列表。
Indicates that commands up to a terminating ImagickDraw::popDefs() command create named elements (e.g. clip-paths, textures, etc.) which may safely be processed earlier for the sake of efficiency.
沒(méi)有返回值。