c_cairo_raster_source_pattern_set_acquire

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
__gshared extern (C)
void function(cairo_pattern_t* pattern, cairo_raster_source_acquire_func_t acquire, cairo_raster_source_release_func_t release) c_cairo_raster_source_pattern_set_acquire;

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