code: public boolean getBooleanAttribute(BooleanAttribute key)
      {
          if(key == DateFormat.BooleanAttribute.PARSE_PARTIAL_MATCH) {
              key = DateFormat.BooleanAttribute.PARSE_PARTIAL_LITERAL_MATCH;
          }
          return booleanAttributes.contains(key);
      }
docs: Returns the current value for the specified BooleanAttribute for this instance
  
  if attribute is missing false is returned.
  
  @see BooleanAttribute