question: @ Nullable private String overrideXmlFileContent ( @ NotNull Document vdDocument , @ NotNull VdPreview . SourceSize vdOriginalSize , @ NotNull StringBuilder errorBuffer ) { int finalWidth = vdOriginalSize . getWidth ( ) ; int finalHeight = vdOriginalSize . getHeight ( ) ; Integer outputWidth = myOutputWidth . get ( ) ; Integer outputHeight = myOutputHeight . get ( ) ; if ( outputWidth > 0 ) { finalWidth = outputWidth ; } if ( outputHeight > 0 ) { finalHeight = outputHeight ; } finalWidth = Math . max ( VdPreview . MIN_PREVIEW_IMAGE_SIZE , finalWidth ) ; finalHeight = Math . max ( VdPreview . MIN_PREVIEW_IMAGE_SIZE , finalHeight ) ; finalWidth = Math . min ( VdPreview . MAX_PREVIEW_IMAGE_SIZE , finalWidth ) ; finalHeight = Math . min ( VdPreview . MAX_PREVIEW_IMAGE_SIZE , finalHeight ) ; VdOverrideInfo overrideInfo = new VdOverrideInfo ( finalWidth , finalHeight , myOpacity . get ( ) , myAutoMirrored . get ( ) ) ; return VdPreview . overrideXmlContent ( vdDocument , overrideInfo , errorBuffer ) ; }
target:  Modify the source XML content with custom values set by the user, such as final output size and opacity.