Function clang_sys::clang_indexTranslationUnit

pub unsafe extern fn clang_indexTranslationUnit(index: CXIndexAction,
                                                data: CXClientData,
                                                callbacks: *mut IndexerCallbacks,
                                                n_callbacks: c_uint,
                                                flags: CXIndexOptFlags,
                                                tu: CXTranslationUnit)
                                                -> c_int