public static CredentialModel createAssumeRoleCredential()

in solution/solution-cross-account-sts-token/code-example/java/common/src/main/java/org/example/sdk2_0/AssumeRoleSample.java [64:98]
23 lines of code
1 McCabe index (conditional complexity)

    public static CredentialModel createAssumeRoleCredential(com.aliyun.credentials.Client credentialClient) throws Exception {
        com.aliyun.teaopenapi.models.Config config = new com.aliyun.teaopenapi.models.Config()
            .setCredential(credentialClient)
            // 地域，以华东1（杭州）为例
            .setRegionId("cn-hangzhou");

        com.aliyun.sts20150401.Client stsClient = new com.aliyun.sts20150401.Client(config);
        RuntimeOptions runtimeOptions = new RuntimeOptions()
            // 开启自动重试机制，只会对超时等网络异常进行重试
            .setAutoretry(true)
            // 设置自动重试次数，默认3次
            .setMaxAttempts(3);
        AssumeRoleRequest assumeRoleRequest = new AssumeRoleRequest()
            // 请替换为您实际要扮演的RAM角色ARN
            // 格式为 acs:ram::${账号 ID}:role/${角色名称}
            .setRoleArn("<role-arn>")
            // 角色会话名称
            .setRoleSessionName("WellArchitectedSolutionDemo")
            // 设置会话权限策略，进一步限制STS Token 的权限，如果指定该权限策略，则 STS Token 最终的权限策略取 RAM 角色权限策略与该权限策略的交集
            // 非必填。示例值：{"Statement": [{"Action": ["*"],"Effect": "Allow","Resource": ["*"]}],"Version":"1"}
            .setPolicy("{\"Statement\": [{\"Action\": [\"*\"],\"Effect\": \"Allow\",\"Resource\": [\"*\"]}],"
                + "\"Version\":\"1\"}")
            // STS Token 有效期，单位：秒
            .setDurationSeconds(3600L);
        AssumeRoleResponse assumeRoleResponse = stsClient.assumeRoleWithOptions(assumeRoleRequest, runtimeOptions);
        AssumeRoleResponseBody.AssumeRoleResponseBodyCredentials credentials = assumeRoleResponse.getBody().getCredentials();

        // 返回角色扮演获取到的STS Token
        return CredentialModel.builder()
            .accessKeyId(credentials.getAccessKeyId())
            .accessKeySecret(credentials.getAccessKeySecret())
            .securityToken(credentials.getSecurityToken())
            .expiration(ParameterHelper.getUTCDate(credentials.getExpiration()).getTime())
            .build();
    }