Function CGPDFDictionaryApplyBlock 

pub unsafe extern "C-unwind" fn CGPDFDictionaryApplyBlock(
    dict: CGPDFDictionaryRef,
    block: CGPDFDictionaryApplierBlock,
    info: *mut c_void,
)

👎Deprecated: renamed to CGPDFDictionary::apply_block

Available on crate features CGPDFDictionary and CGPDFObject and block2 only.