def system_mod_stamp
      hash = JSON.parse(SF_CLIENT.http_get("/services/data/v#{SF_CLIENT.version}/query", :q => "SELECT SystemModstamp FROM #{salesforce_object_name} WHERE Id = '#{salesforce_id}'").body)
      hash["records"].first.try(:[], "SystemModstamp")
    end
def system_mod_stamp
      hash = JSON.parse(SF_CLIENT.http_get("/services/data/v#{SF_CLIENT.version}/query", :q => "SELECT SystemModstamp FROM #{salesforce_object_name} WHERE Id = '#{salesforce_id}'").body)
      hash["records"].first.try(:[], "SystemModstamp")
    end
def salesforce_object_exists?
      return salesforce_object_exists_method if respond_to? salesforce_exists_method
      return salesforce_object_exists_default
    end
 Finds a salesforce record by its Id and returns nil or its SystemModstamp