Defined in file gbproj.asn
C++ class: CViewDataLink

ViewDataLink ::= SEQUENCE {
    --- if both are absent - link goes to project
    --- if both present - fingerprinted object inside project item
    --- if only project-item-id present - link goes to project item

    --- project item id
    project-item-id INTEGER OPTIONAL,

    --- fingerprint of object to show in view
    fingerprint CHOICE {
        crc32 INTEGER,
        md5   OCTET STRING

    type VisibleString