          if self._s_i >= 1:
              self._s_i -= 1
  
      cdef void unshift(self) nogil:
          self._b_i -= 1
          self._buffer[self._b_i] = self.S(0)
          self._s_i -= 1
          self.shifted[self.B(0)] = True
  
 
</s>
        self.c.unshift()
          if self._s_i >= 1:
              self._s_i -= 1
  
      cdef void unshift(self) nogil:
        self.c.unshift()
          self._b_i -= 1
          self._buffer[self._b_i] = self.S(0)
          self._s_i -= 1
          self.shifted[self.B(0)] = True
  
keep keep keep add keep keep keep keep keep
 * Shadow StateClass with StateC, to start proxying
spacy/syntax/stateclass.pyx