Setting a statement parameter to an untyped null value will cause a NullPointerException. Example:

Statement.newBuilder("INSERT INTO T (K, V) VALUES (@p1, @p2)")
    .bind("p1")
    .to("k1")
    .bind("p2")
    .to((Value) null)
    .build()))

Untyped null values are often used in ORMs and is commonly used in the JDBC driver. This will also be necessary for PostgreSQL connections, as the PostgreSQL JDBC driver allows applications to supply untyped null parameter values.