Checks if the current form is required.
This method doesn't have any parameters.
builder.CreateFile("docx");
var oDocument = Api.GetDocument();
var oComboBoxForm = Api.CreateComboBoxForm({"key": "Personal information", "tip": "Choose your country", "required": true, "placeholder": "Country", "editable": false, "autoFit": false, "items": ["Latvia", "USA", "UK"]});
var oParagraph = oDocument.GetElement(0);
oParagraph.AddElement(oComboBoxForm);
var bRequired = oComboBoxForm.IsRequired();
oParagraph = Api.CreateParagraph();
oParagraph.AddText("The first form from this document is required: " + bRequired);
oDocument.Push(oParagraph);
builder.SaveFile("docx", "IsRequired.docx");
builder.CloseFile();