presto-main/src/main/java/io/prestosql/sql/planner/optimizations/UnaliasSymbolReferences.java/UnaliasSymbolReferences/visitTableWriter
class UnaliasSymbolReferences:        @Override
        public PlanNode visitTableWriter(TableWriterNode node, RewriteContext<Void> context)
        {
            PlanNode source = context.rewrite(node.getSource());
            SymbolMapper mapper = new SymbolMapper(mapping);
            return mapper.map(node, source);
        }