default void cleanup(Connection connection) throws SQLException {
        // Do nothing by default.
    }
Cleans up a used connection before it is returned to a connection pool.

@param connection to apply configuration to
@throws SQLException if unable to cleanup the connection
@throws NullPointerException if the provided {@code connection}
is {@code null}
runtime-parent/runtime-core/src/main/java/com/speedment/runtime/core/component/connectionpool/ConnectionDecorator.java