code: private void obtainValidateOnFocusLost(@NonNull final TypedArray typedArray) {
          validateOnFocusLost(typedArray
                  .getBoolean(R.styleable.AbstractValidateableView_validateOnFocusLost,
                          DEFAULT_VALIDATE_ON_FOCUS_LOST));
      }
docs: Obtains, whether the value of the view should be validated, when the view loses its focus, or
  not, from a specific typed array.
  
  @param typedArray
  The typed array, it should be obtained from, whether the value of the view should be
  validated, when the view loses its focus, or not, as an instance of the class {@link
  TypedArray}. The typed array may not be null