function getSampleRows() {
  var employeeCount = 60;
  var jobCount = employeeCount / 10;
  var departmentCount = employeeCount / 20;
  var salary = 100000;

  var employees = new Array(employeeCount);
  for (var i = 0; i < employeeCount; i++) {
    var employee = lf.testing.hrSchemaSampleData.generateSampleEmployeeData(db);
    employee.
        setId(i.toString()).
        setJobId(String(i % jobCount)).
        setDepartmentId('departmentId' + String(i % departmentCount)).
        setSalary(salary);
    employees[i] = employee;
  }

  var jobs = new Array(jobCount);
  for (var i = 0; i < jobCount; i++) {
    var job = lf.testing.hrSchemaSampleData.generateSampleJobData(db);
    job.
        setId(i.toString()).
        setMinSalary(salary);
    jobs[i] = job;
  }

  var departments = new Array(departmentCount);
  for (var i = 0; i < departmentCount; i++) {
    var department =
        lf.testing.hrSchemaSampleData.generateSampleDepartmentData(db);
    department.setId('departmentId' + i.toString());
    departments[i] = department;
  }

  return {
    employees: employees,
    jobs: jobs,
    departments: departments
  };
}
Generates sample data to be used for tests. Specifically it generates
 - 60 employees,
 - 6 jobs,
 - 3 departments
Such that each job contains 10 employees and each department contains 20
employees.
@return {{
  employees: !Array<!lf.Row>,
  jobs: !Array<!lf.Row>,
  departments: !Array<!lf.Row>
}}