obscureText property

bool obscureText

Whether to hide the text being edited (e.g., for passwords).

Implementation 

bool get obscureText => _obscureText;
void obscureText= (bool value)

Implementation 

set obscureText(bool value) {
  if (_obscureText == value)
    return;
  _obscureText = value;
  markNeedsSemanticsUpdate();
}