code: func CairoCreateContext(cr *cairo.Context) *Context {
  	c := C.pango_cairo_create_context(cairo_context(cr))
  	context := new(Context)
  	context.pangoContext = (*C.PangoContext)(c)
  	return context
  }
docs: /* Convenience
   */
  //PangoContext *pango_cairo_create_context (cairo_t   *cr);