protected internal void ReadDocObjPartial() {
xrefObj = ArrayList.Repeat(null, xref.Length / 2);
ReadDecryptedDocObj();
if (objStmToOffset != null) {
int[] keys = objStmToOffset.GetKeys();
for (int k = 0; k < keys.Length; ++k) {
int n = keys[k];
objStmToOffset[n] = xref[n * 2];
xref[n * 2] = -1;
}
}
}