code: public void setInput(String key, String value) {
          if (getAllowedKeys() != null && !getAllowedKeys().contains(key))
              throw new IllegalStateException("The input key " + key + " is not allowed for lookups");
  
          _inputs.put(key, value);
      }
docs: Set the value of a single input.
  @param key key of input
  @param value value of input