presto-main/src/main/java/io/prestosql/sql/analyzer/ExpressionAnalyzer.java/Context/expectingLambda
class Context:        public Context expectingLambda(List<Type> functionInputTypes)
        {
            return new Context(scope, requireNonNull(functionInputTypes, "functionInputTypes is null"), this.fieldToLambdaArgumentDeclaration);
        }