presto-main/src/main/java/io/prestosql/sql/analyzer/AggregationAnalyzer.java/AggregationAnalyzer/visitExpression
class AggregationAnalyzer:        @Override
        protected Boolean visitExpression(Expression node, Void context)
        {
            throw new UnsupportedOperationException("aggregation analysis not yet implemented for: " + node.getClass().getName());
        }