Supports type

[amitguptagwl]

For the complex XML where some object structures are repeated, we should be able to define the type and use it to define tags of this type;

Eg

<?xml version = "1.0"?>

<students nillable="false">
   <:type>
       <name minLength="3" maxLength="10" ></name>
       <subject>
             <name pattern="math|hindi|english|science|history"></name>
              <score type="positiveDecimal"></score>
       </subject>
   <:type>
    <student repeatable minOccurs="1">
        <:a>
            <id length="6"></id>
        </:a>
        <firstname type="name" nillable="false"></firstname>
        <lastname type="name" nillable="false"></lastname>
        <nickname type="name" ></nickname>
        <email pattern="[a-z0-9]+@schoolname.org" nillable="false"></email>
        <age type="positiveInteger" min="9" max="19"></age>
        <contact>
            <phone length="10"></phone>
        </contact>
        <gender nillable="false" ></gender>
        <marks>
            <subject repeatable type="subject" minOccurs="5" maxOccurs="6" ></subject>
        </marks>
    </student>
</students>