docs: public static String rewriteMethodSignature(ClassNameRewriter classNameRewriter, String methodSignature) {
          if (classNameRewriter != IdentityClassNameRewriter.instance()) {
              SignatureParser parser = new SignatureParser(methodSignature);
  
              StringBuilder buf = new StringBuilder();
  
              buf.append('(');
              for (Iterator<String> i = parser.parameterSignatureIterator(); i.hasNext();) {
                  buf.append(rewriteSignature(classNameRewriter, i.next()));
              }
  
              buf.append(')');
              buf.append(rewriteSignature(classNameRewriter, parser.getReturnTypeSignature()));
  
              methodSignature = buf.toString();
          }
  
          return methodSignature;
      }