@Override
    public void close(Connection conn, String sql, Statement stmt) throws SQLException {
        if (stmt != null) {
            stmt.close();
        }
    }
Called to close an individual prepared statement created from this builder.
In this case, it closes immediately.

@param sql  the translated SQL which was prepared
@param stmt the statement

@throws java.sql.SQLException if anything goes wrong closing the statement
core/src/main/java/org/jdbi/v3/core/statement/DefaultStatementBuilder.java