code: def _conditional_exits(self, block_addr):
          
  
          vex_block = self.project.factory.block(block_addr).vex
          lst = [ ]
  
          for i, stmt in enumerate(vex_block.statements):
              if isinstance(stmt, pyvex.IRStmt.Exit):
                  lst.append(i)
  
          return lst
docs: Return a list of conditional statement exits with respect to a basic block.
  
          :param block_addr:  The address of the basic block.
          :return:            A list of statement IDs.