presto-main/src/main/java/io/prestosql/sql/relational/SqlToRowExpressionTranslator.java/ChangeTypeVisitor/visitLambda
class ChangeTypeVisitor:            @Override
            public RowExpression visitLambda(LambdaDefinitionExpression lambda, Void context)
            {
                throw new UnsupportedOperationException();
            }