| ChildNames | get child names of an xml node |
| GetNumberOfQuestions | obtain number of a questions from coursera xml |
| GetNumberOfVersions | obtain all versions of a question from coursera xml |
| GetOption | get option from version |
| GetOptionGroup | get option group from version |
| GetPreamble | Obtain preamble of a test from coursera xml |
| GetQuestion | obtain all versions of a question from coursera xml |
| GetTitle | Obtain title of a test from coursera xml |
| GetType | get type of a version (numeric/checkbox/radio) |
| GetVersion | obtain specific version of a question from coursera xml |
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