<summary> Appends all the mappings from an existing font fallback object. </summary> <param name="fontFallback">Font fallback to read mappings from.</param> <returns> Standard HRESULT error code. </returns>
See Implementation
<summary> Appends all the mappings from an existing font fallback object. </summary> <param name="fontFallback">Font fallback to read mappings from.</param> <returns> Standard HRESULT error code. </returns>