'Provide a database-specific :class:`.TypeEngine` object, given
the generic object which comes from the types module.
This method looks for a dictionary called
``colspecs`` as a class or instance-level variable,
and passes on to :func:`.types.adapt_type`.'

def type_descriptor(self, typeobj):

    return sqltypes.adapt_type(typeobj, self.colspecs)
