Check the documentation in the introspection data
gi-docgen check [OPTIONS…] [GIRFILE]
The check command runs a series of checks on the introspection file, to verify that public API is properly documented. It can be used as part of a test suite.
DIRto the list of paths used to find introspection data files included in the given
GIRFILE. The default search path for GIR files is
$XDG_DATA_HOME/gir-1.0; this option is typically used to include uninstalled GIR files, or non-standard locations.
-C, --config FILE
Loads a project configuration file.