presto-parser/src/main/java/io/prestosql/sql/parser/AstBuilder.java/AstBuilder/visitExecute
class AstBuilder:    @Override
    public Node visitExecute(SqlBaseParser.ExecuteContext context)
    {
        return new Execute(
                getLocation(context),
                (Identifier) visit(context.identifier()),
                visit(context.expression(), Expression.class));
    }