code: static File getSourceFolder(MavenProject project)
    {
      final Properties projectProperties = project.getProperties();
  
      if (projectProperties.containsKey(XCodeDefaultConfigurationMojo.XCODE_SOURCE_DIRECTORY)) {
        return new File(project.getBasedir(),
              projectProperties.getProperty(XCodeDefaultConfigurationMojo.XCODE_SOURCE_DIRECTORY));
      }
      return new File(project.getBasedir(), XCodeDefaultConfigurationMojo.DEFAULT_XCODE_SOURCE_DIRECTORY);
  
    }
docs: Checks if the source folder location has been explicitly set by the "xcode.sourceDirectory". If
  not the default "src/xcode" is returned.