pub unsafe extern "C" fn fy_emit_document_start(
emit: *mut fy_emitter,
fyd: *mut fy_document,
fyn: *mut fy_node,
) -> c_intpub unsafe extern "C" fn fy_emit_document_start(
emit: *mut fy_emitter,
fyd: *mut fy_document,
fyn: *mut fy_node,
) -> c_int