code: public static Statement makeStatement(Claim claim,
  			List<Reference> references, StatementRank rank,
  			String statementId) {
  		return factory.getStatement(claim, references, rank, statementId);
  	}
docs: Creates a {@link Statement}. It might be more convenient to use the
  {@link StatementBuilder} instead.
  <p>
  The string id is used mainly for communication with a Wikibase site, in
  order to refer to statements of that site. When creating new statements
  that are not on any site, the empty string can be used.
  
  @param claim
  the main claim the Statement refers to
  @param references
  the references for the Statement
  @param rank
  the rank of the Statement
  @param statementId
  the string id of the Statement
  @return a {@link Statement} corresponding to the input