private static boolean isThisCheck(PsiStatement statement, PsiParameter parameter) {
    if (!(statement instanceof PsiIfStatement ifStatement)) return false;
    if (ifStatement.getElseBranch() != null) return false;
    if (!returnsBoolean(ifStatement.getThenBranch(), true)) return false;
    PsiExpression condition = PsiUtil.skipParenthesizedExprDown(ifStatement.getCondition());
    OrderedBinaryExpression<PsiThisExpression, PsiExpression> expr = OrderedBinaryExpression.from(condition, PsiThisExpression.class);
    return expr != null && expr.getFirstOperand().getQualifier() == null &&
           expr.getTokenType() == JavaTokenType.EQEQ &&
           ExpressionUtils.isReferenceTo(expr.getSecondOperand(), parameter);
  }
private static boolean isThisCheck(PsiStatement statement, PsiParameter parameter)