Deprecateddpi_x: numberDots Per Inch (aka Pixels Per Inch)
Deprecateddpi_y: numberDots Per Inch (aka Pixels Per Inch)
since 2.42.3: This function used to set a global default DPI. However, it only worked if it was called before any Rsvg.Handle objects had been created; it would not work after that. To avoid global mutable state, please use Rsvg.Handle.set_dpi instead.
Do not use this function. Create an Rsvg.Handle and call Rsvg.Handle.set_dpi_x_y on it instead.