iTextSharp.text.pdf.LongHashtable.ContainsKey C# (CSharp) Метод

        public bool ContainsKey( long key )
        {
            LongHashtableEntry[] tab = table;
            int hash = key.GetHashCode();
            int index = ( hash & 0x7FFFFFFF ) % tab.Length;
            for ( LongHashtableEntry e = tab[index] ; e != null ; e = e.next ) {
                if ( e.hash == hash && e.key == key )
                    return true;
            }
            return false;
        }