code: private boolean isFileTransfer(String sql)
    {
      SFStatementType statementType = StmtUtil.checkStageManageCommand(sql);
      return statementType == SFStatementType.PUT ||
             statementType == SFStatementType.GET;
    }
docs: A method to check if a sql is file upload statement with consideration for
  potential comments in front of put keyword.
  <p>
  
  @param sql sql statement
  @return true if the command is upload statement