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| badge | Embed a lifecycle badge in documentation |
| deprecated | Mark an argument as deprecated |
| deprecate_soft | Deprecate functions and arguments |
| deprecate_stop | Deprecate functions and arguments |
| deprecate_warn | Deprecate functions and arguments |
| last_warning | Display last deprecation warnings |
| last_warnings | Display last deprecation warnings |
| verbosity | Control the verbosity of deprecation signals |