成员的完整列表，这些成员属于 FoxitPDFSDKPython3.SignatureArray,包括所有继承而来的类成员

Add(element)	FoxitPDFSDKPython3.SignatureArray
GetAt(index)	FoxitPDFSDKPython3.SignatureArray
GetSize()	FoxitPDFSDKPython3.SignatureArray
InsertAt(index, element)	FoxitPDFSDKPython3.SignatureArray
RemoveAll()	FoxitPDFSDKPython3.SignatureArray
RemoveAt(index)	FoxitPDFSDKPython3.SignatureArray
SignatureArray()	FoxitPDFSDKPython3.SignatureArray
SignatureArray(other)	FoxitPDFSDKPython3.SignatureArray