code: public String getManifestAttribute(final Attributes.Name name)
  	{
  		if (getManifest() != null)
  		{
  			final Attributes attributes = getManifest().getMainAttributes();
  			final Object value = attributes.get(name);
  			if (value != null)
  			{
  				return value.toString().trim();
  			}
  		}
  		return "";
  	}
docs: Gets the manifest attribute value from the given {@code Attributes.Name} object.
  
  @param name
  the name
  @return the manifest attribute or an empty String if the manifest attribute value is null