Supporting Several Code Syntax

Append the code name like this:

```dart
final languageClass = e.attributes['class'];
    print('code class: $languageClass');
```

Dart

final languageClass = e.attributes['class'];
    print('code class: $languageClass');

json

{
"firstname": "john",
}

java

class Main {

  public static void main(String[] args) {
    
    System.out.println("Enter two numbers");
    int first = 10;
    int second = 20;
    
    System.out.println(first + " " + second);

    // add two numbers
    int sum = first + second;
    System.out.println("The sum is: " + sum);
  }
}

javascript

render() {
        const { noImage, hideImages, isProxifyImages } = this.props;
        const { allowNoImage } = this.state;
        let { text } = this.props;
        if (!text) text = ''; // text can be empty, still view the link meta data

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