presto-parser/src/main/java/io/prestosql/sql/SqlFormatter.java/SqlFormatter/visitCreateSchema
class SqlFormatter:        @Override
        protected Void visitCreateSchema(CreateSchema node, Integer context)
        {
            builder.append("CREATE SCHEMA ");
            if (node.isNotExists()) {
                builder.append("IF NOT EXISTS ");
            }
            builder.append(formatName(node.getSchemaName()));
            builder.append(formatPropertiesMultiLine(node.getProperties()));

            return null;
        }