* feat: add convert_string to document-converter
Signed-off-by: Peter Staar <taa@zurich.ibm.com>
* fix unsupported operand type(s) for |: type and NoneType
Signed-off-by: Peter Staar <taa@zurich.ibm.com>
* added tests for convert_string
Signed-off-by: Peter Staar <taa@zurich.ibm.com>
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Signed-off-by: Peter Staar <taa@zurich.ibm.com>