code: public Schema analyzer(String name, Analyzer analyzer) {
          if (analyzers == null) {
              analyzers = new LinkedHashMap<>();
          }
          analyzers.put(name, analyzer);
          return this;
      }
docs: Adds a new {@link Analyzer}.
  
  @param name the name of the {@link Analyzer} to be added
  @param analyzer the {@link Analyzer} to be added
  @return this with the specified analyzer