presto-main/src/main/java/io/prestosql/sql/analyzer/ExpressionAnalyzer.java/ExpressionAnalyzer/visitExpression
class ExpressionAnalyzer:        @Override
        protected Type visitExpression(Expression node, StackableAstVisitorContext<Context> context)
        {
            throw semanticException(NOT_SUPPORTED, node, "not yet implemented: " + node.getClass().getName());
        }