static InternalConfig load() throws IOException {
        return load(new LoadConfiguration()
                        .setConfigRelativePath(DEFAULT_CONFIG_RESOURCE_RELATIVE_PATH)
                        .setConfigAbsolutePath(DEFAULT_CONFIG_RESOURCE_ABSOLUTE_PATH)
                        .setConfigOverrideRelativePaths(singletonList(CONFIG_OVERRIDE_RESOURCE)));
    }
@return the default retry mode, or null if not configured
aws-java-sdk-core/src/main/java/com/amazonaws/internal/config/InternalConfig.java