Function QLPreviewRequestSetURLRepresentation 

pub unsafe extern "C-unwind" fn QLPreviewRequestSetURLRepresentation(
    preview: &QLPreviewRequest,
    url: Option<&CFURL>,
    content_type_uti: Option<&CFString>,
    properties: Option<&CFDictionary>,
)

👎Deprecated: renamed to QLPreviewRequest::set_url_representation

Available on crate feature QLGenerator only.