code: private void initializePasswordRepetitionEditText() {
          passwordRepetitionEditText = (EditText) findViewById(R.id.password_repetition_edit_text);
          passwordRepetitionEditText.addValidator(
                  Validators.equal(this, R.string.equal_validator_error_message, passwordEditText));
      }
docs: Initializes the edit text, which allows to enter a password repetition.