Performs the grading process of forms.
OmrAnalysisEngine can be used to compute filled-in forms grades. The answers get marked based on the filled-in form provided as an answer key in the OmrAnalysisEngine Constructor.
If no answer key is available, users can fill the OmrAnalysisEngine.Grades property by creating grades objects manually.
After properly filling the OmrAnalysisEngine.Grades and the OmrAnalysisEngine.FilledForms properties, the user can grade the forms and generate the OmrGradesStatistics object using OmrAnalysisEngine.GradeForms.
The grading process is performed on the fields that are labeled as gradable in the corresponding ITemplateForm.