@Override
  public Connection getConnection() throws SQLException {
    if (!isActive) {
      throw new SQLException(
          "GemFireConnPooledDataSource::getConnection::No valid Connection available");
    }
    PooledConnection connPool = null;
    try {
      connPool = (PooledConnection) provider.borrowConnection();
    } catch (PoolException cpe) {
      throw new SQLException(cpe.toString());
    }
    return getSQLConnection(connPool);
  }
Implementation of datasource interface function. This method is used to get the connection from
the pool. Default user name and password will be used.

@return ???
geode-core/src/main/java/org/apache/geode/internal/datasource/GemFireConnPooledDataSource.java