code: public static Map<String, DataSource> getDataSourceMap(final Map<String, DataSourceConfiguration> dataSourceConfigurationMap) {
          Map<String, DataSource> result = new LinkedHashMap<>(dataSourceConfigurationMap.size(), 1);
          for (Entry<String, DataSourceConfiguration> entry : dataSourceConfigurationMap.entrySet()) {
              result.put(entry.getKey(), entry.getValue().createDataSource());
          }
          return result;
      }
docs: Get data source map.
  
  @param dataSourceConfigurationMap data source configuration map
  @return data source map