public AWSCredentials getCredentials() {
        try {
            return new PropertiesCredentials(new File(this.credentialsFilePath), PROVIDER_NAME);
        } catch (IOException e) {
            throw new SdkClientException(
                    "Unable to load AWS credentials from the "
                            + credentialsFilePath + " file", e);
        }
    }
Creates a new PropertiesFileCredentialsProvider that will attempt to load
a custom file from the path specified to read AWS security credentials.

@param credentialsFilePath
           The custom classpath resource path to a properties file from
           which the AWS security credentials should be loaded.

           For example,
           <ul>
           <li>/etc/somewhere/credentials.properties</li>
           </ul>
aws-java-sdk-core/src/main/java/com/amazonaws/auth/PropertiesFileCredentialsProvider.java