System.Security.SecurityDocument.GetString C# (CSharp) Method

        public String GetString( ref int position, bool bCreate )
        {
            int stringEnd;
            bool bFoundEnd = false;
            for (stringEnd = position; stringEnd < m_data.Length-1; stringEnd += 2)
            {
                if (m_data[stringEnd] == 0 && m_data[stringEnd + 1] == 0)
                {
                    bFoundEnd = true;
                    break;
                }
            }

            BCLDebug.Assert(bFoundEnd, "Malformed string in parse data");

            StringMaker m = System.SharedStatics.GetSharedStringMaker();

            try 
            {

                if (bCreate)
                {
                    m._outStringBuilder = null;
                    m._outIndex = 0;

                    for (int i = position; i < stringEnd; i += 2)
                    {
                        char c = (char)(m_data[i] << 8 | m_data[i+1]);

                        // add character  to the string
                        if (m._outIndex < StringMaker.outMaxSize) 
                        {
                            // easy case
                            m._outChars[m._outIndex++] = c;
                        } 
                        else
                        {
                            if (m._outStringBuilder == null) 
                            {
                                // OK, first check if we have to init the StringBuilder
                                m._outStringBuilder = new StringBuilder();
                            }
                    
                            // OK, copy from _outChars to _outStringBuilder
                            m._outStringBuilder.Append(m._outChars, 0, StringMaker.outMaxSize);
                     
                            // reset _outChars pointer
                            m._outChars[0] = c;
                            m._outIndex = 1;
                        }
                    }
                }

                position = stringEnd + 2;

                if (bCreate)
                    return m.MakeString();
                else
                    return null;
            }
            finally
            {
                System.SharedStatics.ReleaseSharedStringMaker(ref m);
            }
        }