Method: GET_ANSWER_TEXT
Method: IF_GRFN_API_SURVEY_RESPONSE~RETRIEVE
Method: FILTER_HIDDEN_Q
Method: IF_GRFN_API_SURVEY_RESPONSE~VALIDATE_ANSWERS
Method: VALIDATE_ANSWERS
Method: CHECK_QUESTIONS
Method: GET_QUESTION
Method: PREPARE_FORMULA_VALUES
Method: PREPARE_FORMULA_VALUES_PROB
Method: PREPARE_FORMULA_VALUES_IMPACT
Method: PREPARE_FORMULA_VALUES_SOO