Rest-endpoint-to-ingest-questionnaires.md

@@ -4,4 +4,14 @@ The main idea is to create a set of rest endpoints so that someone can programat
 - a question
 - an answer
 - ...
-to fill a questionnaire correctly by calling the rest enpoints.
\ No newline at end of file
+to fill a questionnaire correctly by calling the rest enpoints.
+
+# necessary methods
+
+* addStudy()
+* addInstrumentToStudy(studyId, instrumentId)
+* addQuestionToInstrument()
+* addAnswer()
+* addCode()
+* addItem()
+* ....