Given the following code snippet, what will be the output if the element is not found on the page?

Given the following code snippet, what will be the output if the element is not found on the page?

public class LoginPage {
  @FindBy(id = "submitBtn")
  private WebElement submitButton;

  public LoginPage(WebDriver driver) {
    PageFactory.initElements(driver, this);
  }

  public boolean isSubmitButtonDisplayed() {
    return submitButton.isDisplayed();
  }
}