graphql-multi-interfaces.txt

interface SiteTreeInterface {
    id
    created
    title
    content
}
interface PageInterface {
    id
    created
    title
    content
    myField
}
interface RediectorPageInterface {
    id
    created
    title
    content
    myField
    redirectionType
    externalUrl
}



type SiteTree implements SiteTreeInterface {
    id
    created
    title
    content
}

type Page implements SiteTreeInterface, PageInterface {
    id
    created
    title
    content
    myField
}

type RedirectorPage implements RedirectorPageInterface, SiteTreeInterface, PageInterface {
    id
    created
    title
    content
    myField
    redirectionType
    externalUrl
}