presto-parser/src/main/java/io/prestosql/sql/parser/AstBuilder.java/AstBuilder/visitCast
class AstBuilder:    @Override
    public Node visitCast(SqlBaseParser.CastContext context)
    {
        boolean isTryCast = context.TRY_CAST() != null;
        return new Cast(getLocation(context), (Expression) visit(context.expression()), (DataType) visit(context.type()), isTryCast);
    }