@maschinenlesbar.org/dip-bundestag-cli
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    Variable idProblemConst

    idProblem: Problem<string> = ...

    A document id for get(id) must not be blank: an empty last path segment turns /api/v1/vorgang/<id> into the collection endpoint, which answers with the list envelope instead of one document. Nor may it be "." or "..": encodeURIComponent leaves both unchanged and URL parsing resolves them, so they would request the list or the API root. (Longer dot runs and percent-encoded forms such as "%2e%2e" are ordinary ids.)