code: public static UpdateForClause forWithin(String variable, String path) {
          UpdateForClause clause = new UpdateForClause();
          return clause.within(variable, path);
      }
docs: Creates an updateFor clause that starts with <code>FOR variable WITHIN path</code>.
  
  @param variable the first variable in the clause.
  @param path the first path in the clause, a WITHIN path.
  @return the clause, for chaining. See {@link #when(Expression)} and {@link #end()} to complete the clause.