src/main/java/org/mariadb/jdbc/MariaDbDataSource.java [394:405]:
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  public <T> T unwrap(final Class<T> iface) throws SQLException {
    try {
      if (isWrapperFor(iface)) {
        return iface.cast(this);
      } else {
        throw new SQLException(
            "The receiver is not a wrapper and does not implement the interface");
      }
    } catch (Exception e) {
      throw new SQLException("The receiver is not a wrapper and does not implement the interface");
    }
  }
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src/main/java/org/mariadb/jdbc/MariaDbPoolDataSource.java [401:412]:
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  public <T> T unwrap(final Class<T> iface) throws SQLException {
    try {
      if (isWrapperFor(iface)) {
        return iface.cast(this);
      } else {
        throw new SQLException(
            "The receiver is not a wrapper and does not implement the interface");
      }
    } catch (Exception e) {
      throw new SQLException("The receiver is not a wrapper and does not implement the interface");
    }
  }
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