code: @Nullable
    @ReturnsMutableCopy
    public ICommonsList <MimeTypeInfo> getAllInfosOfMimeType (@Nullable final IMimeType aMimeType)
    {
      if (aMimeType == null)
        return null;
  
      final ICommonsList <MimeTypeInfo> ret = m_aRWLock.readLocked ( () -> m_aMapMimeType.get (aMimeType));
  
      // Create a copy if present
      return ret == null ? null : ret.getClone ();
    }
docs: Get all infos associated with the passed mime type.
  
  @param aMimeType
  The mime type to search. May be <code>null</code>.
  @return <code>null</code> if a <code>null</code> mime type was passed or
  the passed mime type is unknown.