isAlive(otherPID) {
    try {
      process.kill(otherPID, 0);
      return true;
    } catch (ex) {
      if (ex.code === 'ESRCH') {
        return false;
      }
      throw ex;
    }
  }
Checks if the other process id is running in the current operating system
@param {number} otherPID
@returns {boolean}