/// <exception cref="ImageFormatLimitationException">The remaining space on the heap is too small to fit the string.</exception>
public UserStringHandle GetOrAddUserString(string str)
{
int offset;
if (!_userStrings.TryGetValue(str, out offset))
{
Debug.Assert(!_streamsAreComplete);
offset = GetNewUserStringHeapOffset(str.Length);
_userStrings.Add(str, offset);
_userStringWriter.WriteUserString(str);
}
return(MetadataTokens.UserStringHandle(offset));
}