presto-parser/src/main/java/io/prestosql/sql/tree/Prepare.java/Prepare/Prepare
class Prepare:    private Prepare(Optional<NodeLocation> location, Identifier name, Statement statement)
    {
        super(location);
        this.name = requireNonNull(name, "name is null");
        this.statement = requireNonNull(statement, "statement is null");
    }