func (m *MockSignerDecrypter) Sign(arg0 io.Reader, arg1 []byte, arg2 crypto.SignerOpts) ([]byte, error) {
    m.ctrl.T.Helper()
    ret := m.ctrl.Call(m, "Sign", arg0, arg1, arg2)
    ret0, _ := ret[0].([]byte)
    ret1, _ := ret[1].(error)