isc.DataSource.create({
    allowAdvancedCriteria:true,
    ID:"SchemaSet",
    addGlobalId:false,
    Constructor:"SchemaSet",
    fields:[
        {
            name:"schemaNamespace",
            type:"url"
        },
        {
            name:"schemaImports",
            type:"Object",
            multiple:true
        },
        {
            name:"qualifyAll",
            type:"boolean"
        },
        {
            name:"schema",
            type:"DataSource",
            multiple:true
        }
    ]
})
