BaseImmutableContentMetadata other = (BaseImmutableContentMetadata) obj;
      if (contentDisposition == null) {
         if (other.contentDisposition != null)
            return false;
      } else if (!contentDisposition.equals(other.contentDisposition))
         return false;
      if (contentEncoding == null) {
         if (other.contentEncoding != null)
            return false;
      } else if (!contentEncoding.equals(other.contentEncoding))
         return false;
      if (contentLanguage == null) {
         if (other.contentLanguage != null)
            return false;
      } else if (!contentLanguage.equals(other.contentLanguage))
         return false;
      if (contentLength == null) {
         if (other.contentLength != null)
            return false;
      } else if (!contentLength.equals(other.contentLength))
         return false;
      if (!Arrays.equals(contentMD5, other.contentMD5))
         return false;
      if (contentType == null) {
         if (other.contentType != null)
            return false;
      } else if (!contentType.equals(other.contentType))
         return false;
      return true;
   }

   @Override
   public ContentMetadataBuilder toBuilder() {

   }

   @Override
   public int hashCode() {
      final int prime = 31;
      int result = 1;
      result = prime * result + ((contentDisposition == null) ? 0 : contentDisposition.hashCode());
      result = prime * result + ((contentEncoding == null) ? 0 : contentEncoding.hashCode());
      result = prime * result + ((contentLanguage == null) ? 0 : contentLanguage.hashCode());
      result = prime * result + ((contentLength == null) ? 0 : contentLength.hashCode());
      result = prime * result + Arrays.hashCode(contentMD5);
      result = prime * result + ((contentType == null) ? 0 : contentType.hashCode());
      return result;
   }

   @Override
   public boolean equals(Object obj) {
      if (this == obj)
         return true;
      if (obj == null)
         return false;
      if (getClass() != obj.getClass())
         return false;