def version
      v_ptr = ::FFI::MemoryPointer.new(:pointer, 1)
      r_ptr = ::FFI::MemoryPointer.new(:pointer, 1)

      RPM::C.headerNVR(ptr, nil, v_ptr, r_ptr)
      v = v_ptr.read_pointer.read_string
      r = r_ptr.read_pointer.read_string
      v_ptr.free
      r_ptr.free
      Version.new(v, r, self[:epoch])
    end
def version
      v_ptr = ::FFI::MemoryPointer.new(:pointer, 1)
      r_ptr = ::FFI::MemoryPointer.new(:pointer, 1)

      RPM::C.headerNVR(ptr, nil, v_ptr, r_ptr)
      v = v_ptr.read_pointer.read_string
      r = r_ptr.read_pointer.read_string
      v_ptr.free
      r_ptr.free
      Version.new(v, r, self[:epoch])
    end
TODO: signature
 @return [Version] Version for this package