Function sourceview4_sys::gtk_source_print_compositor_set_header_format

pub unsafe extern "C" fn gtk_source_print_compositor_set_header_format(
    compositor: *mut GtkSourcePrintCompositor, 
    separator: gboolean, 
    left: *const c_char, 
    center: *const c_char, 
    right: *const c_char
)