code: private String getEncoding() {
          return System.getProperty(Citrus.CITRUS_FILE_ENCODING_PROPERTY, System.getenv(Citrus.CITRUS_FILE_ENCODING_ENV) != null ?
                  System.getenv(Citrus.CITRUS_FILE_ENCODING_ENV) : Charset.defaultCharset().displayName());
      }
docs: Gets the default encoding. If set by Citrus system property (citrus.file.encoding) use
  this one otherwise use system default.
  @return