code: public FutureData<PreparedHistoricsQuery> prepare(String hash, long start, long end, String name,
                                                        String... sources) {
          return prepare(hash, start, end, name, -1, sources);
      }
docs: /*
  @param hash    The hash of the CSDL for your historics query.
  Example values: 2459b03a13577579bca76471778a5c3d
  @param start   Unix timestamp for the start time.
  Example values: 1325548800
  @param end     nix timestamp for the end time. Must be at least 24 in the past.
  Example values: 1325548800
  @param name    The name you assign to your historics query.
  Example values: Football
  @param sources Comma-separated list of data sources to include.
  Example values: tumblr
  @return the prepared historics