code: def valueToOid(self, value, impliedFlag=False, parentIndices=None):
          
          if hasattr(value, 'cloneAsName'):
              return value.cloneAsName(impliedFlag, parentRow=self, parentIndices=parentIndices)
  
          baseTag = value.getTagSet().getBaseTag()
          if baseTag == Integer.tagSet.getBaseTag():
              return int(value),
  
          elif IpAddress.tagSet.isSuperTagSetOf(value.getTagSet()):
              return value.asNumbers()
  
          elif baseTag == OctetString.tagSet.getBaseTag():
              if impliedFlag or value.isFixedLength():
                  initial = ()
              else:
                  initial = (len(value),)
              return initial + value.asNumbers()
  
          elif baseTag == ObjectIdentifier.tagSet.getBaseTag():
              if impliedFlag:
                  return tuple(value)
              else:
                  return (len(value),) + tuple(value)
  
          # rfc2578, 7.1
          elif baseTag == Bits.tagSet.getBaseTag():
              return (len(value),) + value.asNumbers()
  
          else:
              raise error.SmiError('Unknown value type for index %r' % (value,))
docs: Turn value object into SMI table instance identifier.
  
          SNMP SMI table objects are identified by OIDs composed of columnar
          object ID and instance index. The index part can be composed
          from the values of one or more tabular objects.
  
          This method takes an arbitrary value object and turns it into a
          sequence of integers representing the tail piece of a tabular
          object identifier.
  
          Parameters
          ----------
          value: one of the SNMP data types that can be used in SMI table
              indices. Allowed types are: :py:class:`Integer`,
              :py:class:`OctetString`, :py:class:`ObjectIdentifier`,
              :py:class:`IpAddress` and :py:class:`Bits`.
  
          impliedFlag: :py:class:`bool` - if `False`, the length of the
              serialized value is included as the first integer of the sequence.
              Otherwise the length is not included (which is frequently the
              case for the last index in the series or a fixed-length value).
  
          Returns
          -------
          :py:class:`tuple` - tuple of integers representing the tail piece
              of an OBJECT IDENTIFIER (i.e. tabular object instance ID)