}
                    return true;
                }
            } catch (final Exception e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Silent token refresh failed: {}", e.getMessage());
                }
            }
            // For MSAL4J, if silent refresh fails, return true if token is still valid

              <excludes>META-INF/MANIFEST.MF</excludes>
              <outputDirectory>${project.build.directory}/failureaccess-sources</outputDirectory>
              <type>java-source</type>
              <silent>false</silent>
            </configuration>
          </execution>
          <execution>
            <id>unpack-guava-sources</id>
            <phase>generate-resources</phase>

        int ilen = data.length, olen = out.length;
        int msbit = ((ilen << 3) - 1 + ((ilen << 3) + 13) * (i / ilen) + (ilen - i % ilen << 3)) % (ilen << 3);
        int mshigh = msbit >>> 3, mslow = msbit & 7;
        int b = c + (out[i % olen] & 0xff)
                + (((data[(ilen - 1 - mshigh) % ilen] & 0xff) << 8 | data[(ilen - mshigh) % ilen] & 0xff) >>> mslow + 1 & 0xff);

        }
    }

    /**
     * Attempts to refresh tokens silently using the MSAL4J silent authentication flow.
     * @param user The Azure AD user whose tokens need to be refreshed.
     * @return The new authentication result, or null if silent refresh failed.
     */
    public IAuthenticationResult refreshTokenSilently(final AzureAdCredential.AzureAdUser user) {