Remove XFA (XML Forms Architecture) content. SignDoc SDK does not support XFA (XML Forms Architecture) and therefore addSignature(), addField(), applyFdf(), and setField() remove XFA from the document to avoid descrepancies between "classic" form fields and XFA. This function is available for PDF documents only. You can also remove XFA content by calling this function. It will fail if the document prohibits removal of XFA (removing XFA from signed documents breaks signatures). This function is available for PDF documents only.

public void removeXFA(
	int flags
)