long roomLeft() {
        return end - offset;
    }
For an object declaration file node, after parsing all the fnd variables, now we will process
the object declaration's contents.

@param data   The FileNode containing all the fnd variable's data.
@param curPtr The current pointer.
@throws IOException
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/main/java/org/apache/tika/parser/microsoft/onenote/OneNotePtr.java