private String getStartClass() throws MojoExecutionException {
String mainClass = this.mainClass;
if (mainClass == null) {
try {
mainClass = MainClassFinder.findSingleMainClass(this.classesDirectory);
} catch (IOException ex) {
throw new MojoExecutionException(ex.getMessage(), ex);
}
}
if (mainClass == null) {
throw new MojoExecutionException(
"Unable to find a suitable main class, " + "please add a 'mainClass' property");
}
return mainClass;
}
