code: func (p *LocalProvider) CloseContext(ctx fab.ClientContext) {
  	mspID := ctx.Identifier().MSPID
  	logger.Debugf("Closing local discovery service for MSP [%s]", mspID)
  	p.cache.Delete(lazycache.NewStringKey(mspID))
  }
docs: // CloseContext frees resources and caches for the given context.