add more documentation to the config_parser methods
add more documentation to the config_parser methods

funginstitute/patentprocessor,yngcan/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor,funginstitute/patentprocessor,yngcan/patentprocessor,yngcan/patentprocessor,nikken1/patentprocessor,nikken1/patentprocessor