Wait Handler implementation in WebDriver

public void waitForElementPresence(By by) {
        Wait<WebDriver> wait = new WebDriverWait(driver, GLOBAL_TIME_OUT);
        wait.until(ExpectedConditions.presenceOfElementLocated(by));
    }
    
    public void waitForElementPresence(WebElement elmt) {
        Wait<WebDriver> wait = new WebDriverWait(driver, GLOBAL_TIME_OUT);
        wait.until(ExpectedConditions.visibilityOf(elmt));
    }

    public void waitForElementVisibility(By by) {
        Wait<WebDriver> wait = new WebDriverWait(driver, GLOBAL_TIME_OUT);
        wait.until(ExpectedConditions.visibilityOfElementLocated(by));
    }

    public void waitForElementClickable(By by) {
        Wait<WebDriver> wait = new WebDriverWait(driver, GLOBAL_TIME_OUT);
        wait.until(ExpectedConditions.elementToBeClickable(by));
    }
    
    public void waitForPageLoaded() {
        Wait<WebDriver> wait = new WebDriverWait(driver, GLOBAL_TIME_OUT);
        wait.until(checkPageLoadStatus());
    }
    
    public void waitForElementNotVisible(By locator) {
        Wait<WebDriver> wait = new WebDriverWait(driver, GLOBAL_TIME_OUT);
        wait.until(ExpectedConditions.invisibilityOfElementLocated(locator));
    }
    
    public void waitTillTitleContains(String text) {
        Wait<WebDriver> wait = new WebDriverWait(driver, GLOBAL_TIME_OUT);
        wait.until(ExpectedConditions.titleContains(text));
    }
    
    public void waitForWindowPresence(Integer requiredWindowNo){
        Wait<WebDriver> wait = new WebDriverWait(driver, GLOBAL_TIME_OUT);
        wait.until(checkWindowPresence(requiredWindowNo.toString()));
    }
    
    public void sleep(int seconds){
        try {
            Thread.sleep(seconds*1000);
        } catch (InterruptedException e) {
            //Ignore the exception
        }
    }
    
    private Function<WebDriver, Boolean> checkPageLoadStatus() {
        return new Function<WebDriver, Boolean>() {
            public Boolean apply(WebDriver driver) {
                return ((JavascriptExecutor) driver).executeScript(
                        "return document.readyState").equals("complete");
            }
        };
    }