code: public static Keyword newKeyword(String prefix, String name) {
          return newKeyword(newSymbol(prefix, name));
      }
docs: Provide a Keyword with the given prefix and name.
  <p>
  Keywords are interned, which means that any two keywords which are equal
  (by value) will also be identical (by reference).
  
  @param prefix
  An empty String or a non-empty String obeying the restrictions
  specified by edn. Never null.
  @param name
  A non-empty string obeying the restrictions specified by edn.
  Never null.
  @return a Keyword, never null.