presto-parser/src/main/java/io/prestosql/sql/SqlFormatter.java/SqlFormatter/visitPrepare
class SqlFormatter:        @Override
        protected Void visitPrepare(Prepare node, Integer indent)
        {
            append(indent, "PREPARE ");
            builder.append(node.getName());
            builder.append(" FROM");
            builder.append("\n");
            process(node.getStatement(), indent + 1);
            return null;
        }