code: def addSources(self, *sources):
          
          self._sources.extend(sources)
  
          debug.logger & debug.flagCompiler and debug.logger(
              'current MIB source(s): %s' % ', '.join([str(x) for x in self._sources]))
  
          return self
docs: Add more ASN.1 MIB source repositories.
  
          MibCompiler.compile will invoke each of configured source objects
          in order of their addition asking each to fetch MIB module specified
          by name.
  
          Args:
              sources: reader object(s)
  
          Returns:
              reference to itself (can be used for call chaining)