src/main/java/com/aliyun/credentials/provider/RamRoleArnCredentialProvider.java [116:124]:
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        if (!StringUtils.isEmpty(builder.STSEndpoint)) {
            this.STSEndpoint = builder.STSEndpoint;
        } else {
            String prefix = builder.enableVpc != null ? (builder.enableVpc ? "sts-vpc" : "sts") : AuthUtils.isEnableVpcEndpoint() ? "sts-vpc" : "sts";
            if (!StringUtils.isEmpty(builder.stsRegionId)) {
                this.STSEndpoint = String.format("%s.%s.aliyuncs.com", prefix, builder.stsRegionId);
            } else if (!StringUtils.isEmpty(AuthUtils.getEnvironmentSTSRegion())) {
                this.STSEndpoint = String.format("%s.%s.aliyuncs.com", prefix, AuthUtils.getEnvironmentSTSRegion());
            } else {
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src/main/java/com/aliyun/credentials/provider/RsaKeyPairCredentialProvider.java [81:89]:
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        if (!StringUtils.isEmpty(builder.STSEndpoint)) {
            this.STSEndpoint = builder.STSEndpoint;
        } else {
            String prefix = builder.enableVpc != null ? (builder.enableVpc ? "sts-vpc" : "sts") : AuthUtils.isEnableVpcEndpoint() ? "sts-vpc" : "sts";
            if (!StringUtils.isEmpty(builder.stsRegionId)) {
                this.STSEndpoint = String.format("%s.%s.aliyuncs.com", prefix, builder.stsRegionId);
            } else if (!StringUtils.isEmpty(AuthUtils.getEnvironmentSTSRegion())) {
                this.STSEndpoint = String.format("%s.%s.aliyuncs.com", prefix, AuthUtils.getEnvironmentSTSRegion());
            } else {
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