docs: public String generateGraphVizDotFileFromInterClassDependencies(final float sizeX, final float sizeY,
              final boolean includeExternalClasses) {
          if (isEmpty()) {
              throw new IllegalArgumentException("List is empty");
          }
          final ScanSpec scanSpec = get(0).scanResult.scanSpec;
          if (!scanSpec.enableInterClassDependencies) {
              throw new IllegalArgumentException(
                      "Please call ClassGraph#enableInterClassDependencies() before #scan()");
          }
          return GraphvizDotfileGenerator.generateGraphVizDotFileFromInterClassDependencies(this, sizeX, sizeY,
                  includeExternalClasses);
      }