SPDX headers missing ?

[opensam]

The licence info is in the code:

grep --color --include='*.java' --recursive --files-with-matches ' GNU Affero General Public License ' | wc -l
2690

But the same files do not have SPDX headers:

grep --color --include='*.java' --recursive --files-with-matches 'SPDX-License-Identifier' | wc -l
0

What about adding this header:
// SPDX-License-Identifier: AGPL-3.0-or-later

Informations and Q&A:
https://spdx.dev/learn/handling-license-info/
https://spdx.org/licenses/AGPL-3.0-or-later.html