code: @Override
      @GraphTransaction
      public String getSchema(String datasetName) throws AtlasException {
          datasetName = ParamChecker.notEmpty(datasetName, "table name");
          LOG.info("Fetching schema for tableName={}", datasetName);
          TypeUtils.Pair<String, String> typeIdPair = validateDatasetNameExists(datasetName);
  
          return getSchemaForId(typeIdPair.left, typeIdPair.right);
      }
docs: Return the schema for the given tableName.
  
  @param datasetName tableName
  @return Schema as JSON