* Generate images a the specific mime type.
* @param config the mime type specific configuration settings.
*/
private void execute(MimeTypeConfiguration config) {
if (config.isGenerate()) {
SuffixMapping mapping = new SuffixMapping(".svg", config.getOutputFileEnding());
Set pairs = getStaleSources(sourceDirectory, destinationDirectory, mapping);
List argList = buildArguments(config);
// create an array with extra space for additional arguments