Function resvg_parse_tree_from_file 

#[unsafe(no_mangle)]
pub extern "C" fn resvg_parse_tree_from_file(
    file_path: *const c_char,
    opt: *const resvg_options,
    tree: *mut *mut resvg_render_tree,
) -> i32

@brief Creates #resvg_render_tree from file.

.svg and .svgz files are supported.

See #resvg_is_image_empty for details.

@param file_path UTF-8 file path. @param opt Rendering options. Must not be NULL. @param tree Parsed render tree. Should be destroyed via #resvg_tree_destroy. @return #resvg_error